Category: Periods, Ovulation & the Menstrual Cycle

As a consultant dermatologist with extensive experience in managing acne and other skin conditions, I understand how menstrual cycles can significantly impact your skin. Fluctuating hormones during your period can cause various skin issues, from increased oiliness and acne breakouts to heightened sensitivity and dryness. Here are some expert tips to help you navigate period skincare and maintain a clear, healthy complexion. Understand the Hormonal Cycle The first step in managing period-related skin issues is understanding how your menstrual cycle affects your skin. Hormones like oestrogen and progesterone fluctuate throughout the month, influencing oil production, skin hydration, and inflammation levels. Typically, the luteal phase (the two weeks leading up to your period) sees an increase in progesterone, which can cause sebaceous glands to produce more oil. This can lead to clogged pores and acne breakouts. Conversely, during your period, oestrogen levels drop, potentially making your skin more sensitive and prone to dryness.  Tailor Your Skincare Routine Adapting your skincare routine to your hormonal cycle can make a significant difference. Here’s a week-by-week guide: Week 1: MenstruationDuring your period, your skin might be more sensitive. Focus on gentle, hydrating products that won’t irritate your skin. Use a mild cleanser and a soothing, non-comedogenic moisturiser. Avoid harsh exfoliants and treatments that could exacerbate sensitivity. Week 2: Follicular PhaseAs oestrogen levels begin to rise, your skin’s hydration improves, and oil production decreases. This is a good time to use products that support hydration and repair. Consider incorporating a hyaluronic acid serum and a light exfoliant to help keep your skin smooth and radiant. Week 3: OvulationYour skin is often at its best during ovulation, thanks to a peak in oestrogen. Continue with your hydrating routine and consider adding antioxidants, such as vitamin C, to protect your skin from environmental stressors and boost radiance. Week 4: Luteal PhaseAs progesterone increases, oil production ramps up. To prevent breakouts, incorporate salicylic acid or benzoyl peroxide into your routine to keep pores clear. Be mindful of your diet and try to reduce your intake of sugary foods, as these can exacerbate acne. Seek Help Early It’s crucial to seek professional help early, especially if your breakouts are becoming more extensive, affecting your mental health, confidence, or self-esteem, causing scarring or marking to the skin, or if you experience changes in circumstances like coming off the combined oral contraceptive pill, pregnancy acne, perimenopause, or undergoing treatments like egg freezing or IVF. Early intervention can prevent long-term skin damage such as scarring and help maintain your confidence. If your acne is spreading to new areas such as your chest, back, and shoulders, or if the severity of your breakouts is increasing, it’s time to seek help. Consult an Expert When dealing with hormonal acne, it’s important to consult a dermatologist who understands the hormonal impacts on the skin and takes a full lifestyle approach. At Self London, we pride ourselves on providing expert-led care that addresses all aspects of skin health. We have a comprehensive range of treatments available to manage breakouts, from skincare advice and prescription treatments to advanced procedures like laser, chemical peels, and other targeted therapies. Consistency is Key Consistency is key to managing period-related skin issues. Stick to a regular skincare routine and avoid the temptation to over-treat your skin when a breakout occurs. Overusing acne treatments can lead to irritation and worsen your skin’s condition. Instead, use targeted treatments sparingly and give them time to work. Manage Stress Stress can exacerbate skin issues, especially during your period. Practice stress-reducing techniques such as yoga, meditation, or deep-breathing exercises to keep stress levels in check. Adequate sleep is also crucial for maintaining healthy skin, so aim for 7-9 hours of quality sleep each night. Consider working with a clinical psychologist who has a specialist interest in skin and body image if you find you are spending many hours of the day worrying about break-outs. Dietary Considerations What you eat can have an impact on your skin’s health. During your period, aim to eat a balanced diet rich in fruits, vegetables, whole grains, and lean proteins. Foods high in antioxidants, such as berries, leafy greens, and nuts, can help combat inflammation and support skin health. Additionally, staying hydrated by drinking plenty of water is essential for keeping your skin plump and radiant. Professional Treatments If you find that your period significantly impacts your skin and at-home treatments aren’t enough, consider professional treatments. At Self London, we understand the hormonal impacts on the skin and take a full lifestyle approach, offering a comprehensive range of treatments including laser for acne (which is completely drug-free), peels, and prescription creams and tablets tailored to individual needs. Listen to Your Skin Finally, it’s important to listen to your skin and adjust your routine as needed. Everyone’s skin is unique, and what works for one person might not work for another. Pay attention to how your skin reacts to different products and treatments, and don’t hesitate to make changes if something isn’t working. Get Expert Advice Being proactive and getting the right advice is better than trial and error from the internet, social media sites, and brands which are ultimately there to sell. A dermatologist who understands the hormonal impacts on the skin can offer a personalised treatment plan that includes skincare advice, professional treatments, and lifestyle recommendations. At Self London, we take pride in providing expert-led, patient-centric care to help you achieve and maintain healthy, radiant skin. Recognise Important Changes and Life Events Certain life events and changes in circumstances can have a significant impact on your skin. For example, if you are thinking of coming off the combined oral contraceptive pill, you may be worried about an acne flare-up. Similarly, acne in pregnancy, life changes such as perimenopause, or undergoing treatments like egg freezing or IVF can all affect your skin. It’s important to seek expert advice in these situations to manage your skin effectively and prevent long-term damage. Full Scale of Tools Available At Self London, we offer […]

Ovulation is the release of a mature egg from one of your ovaries, triggered by a surge in luteinising hormone (LH). It happens once per menstrual cycle and marks the point when pregnancy is biologically possible, but it is also an indicator that your hormones are working as they should, whether or not you are trying to conceive. This guide covers everything you need to know: how ovulation happens, when it happens, what it means for your health, the myths that routinely mislead people, what the physical signs look like, and what can disrupt the process. Quick facts How does ovulation work? Ovulation is the result of a hormonal sequence that begins the moment your period starts, not something that happens in isolation mid-cycle. At the start of each menstrual cycle, the hypothalamus, a small region at the base of your brain releases gonadotropin-releasing hormone (GnRH), which signals the pituitary gland (also in the brain), to make follicle-stimulating hormone (FSH). FSH stimulates a group of follicles in the ovaries to begin developing, each one containing an immature egg.  Several follicles begin growing simultaneously, but over the following one to two weeks, one becomes dominant – larger and more developed than the rest (which are gradually reabsorbed by the body). As the dominant follicle grows, it produces rising levels of oestrogen. This oestrogen has two simultaneous effects: it thickens the lining of the uterus in preparation for a potential pregnancy, and it sends a hormonal signal back to the pituitary gland. When oestrogen reaches a peak, it triggers dramatic release of luteinising hormone – the LH surge. This surge is the direct trigger for ovulation. Within 24 to 36 hours, the dominant follicle ruptures and releases its mature egg into the fallopian tube to be fertilised. What happens next matters as much as the egg release itself. After the egg is released, the empty follicle transforms into a structure called the corpus luteum, which makes progesterone for the remainder of the cycle. Progesterone stabilises the uterine lining and supports implantation. If fertilisation does not occur, the corpus luteum breaks down, progesterone falls, and your period begins, resetting the cycle. When does ovulation start after period and how long does it last? So, does ovulation always happen on day 14? Only in the context of a textbook 28-day cycle, and even then, it’s an approximation. In reality, ovulation occurs around 12 to 16 days before your next period, not 14 days after your last one. That distinction matters, because it means ovulation timing shifts depending on your cycle length. For example, in a shorter 24-day cycle, it may occur as early as days 8 to 12. In a longer 35-day cycle, it may not happen until days 19 to 23. While day 14 is often quoted as the “average”, applying it as a universal rule is misleading. Cycle lengths vary widely between individuals and even from month to month in the same person. If you are taking birth control or hormonal contraception, you may not ovulate. These methods work primarily by suppressing ovulation and also thickening cervical mucus, making it harder for sperm to reach and fertilise an egg. It’s also important to understand where cycle variability comes from. The second half of the cycle, from ovulation to your next period (the luteal phase) tends to be relatively consistent, typically lasting around 14 days. The variation in total cycle length mostly comes from the first half (the follicular phase), which is why ovulation timing can shift. Even if you have regular cycles, ovulation isn’t perfectly predictable. Factors like stress, illness, travel, weight fluctuation, and disrupted sleep can delay ovulation by interfering with the hormonal signals that trigger it. When a period arrives later than expected, it’s usually because ovulation happened later,  not because the period itself was delayed. As for how long ovulation lasts, the process itself only takes about 12 to 24 hours. You can expect to ovulate about 8-20 hours after your LH peaks or 24-36 hours after the LH surge begins rising. What is the fertile window? Your fertile window is a six-day window during each menstrual cycle, the five days leading up to ovulation and the day of ovulation itself when you are most likely to get pregnant. An egg can only survive for 12–24 hours after ovulation, but sperm can survive for up to five days in the female reproductive tract, so if you have unprotected sex in the days before ovulation, pregnancy is still possible. Recent research has shown that the two to three days immediately before ovulation carry the highest probability of conception. In 2025, Hertility’s research team published a study that has become the largest of its kind on fertility awareness in women actively trying to conceive. Analysing responses from 97,414 women, the study found that more than 41% could not accurately identify their fertile window.  What are the signs of ovulation? Your body produces a recognisable set of physical signs and symptoms  around ovulation. Not everyone experiences all of them, but knowing what to look for is the first step in understanding your cycle. The most consistent physical sign is a change in cervical mucus. In the days before ovulation, discharge becomes increasingly clear, slippery, and stretchy, a consistency often compared to raw egg white. This mucus coincides with peak fertility and is driven by rising oestrogen. After ovulation, progesterone causes mucus to thicken and reduce. Other signs include a mild one-sided ache or twinge in the lower abdomen (mittelschmerz), a slight rise in basal body temperature (BBT) after ovulation has occurred, light mid-cycle spotting, increased libido, and breast tenderness. To know read our blog here. How can you track ovulation signs and symptoms? There are several methods you can use to track ovulation, including hormone testing kits, monitoring cervical mucus changes, tracking basal body temperature, and using a period tracking app. Each has different strengths and limitations. Ovulation predictor kits (OPKs) Ovulation predictor kits detect the LH surge in your urine […]

Stress is bad news, period. It can affect the menstrual cycle, and just about every other bodily process. In this article we’ll cover exactly what stress is, the science behind it, how it can impact our periods, and some top tips for managing it. Quick facts: What is stress? Stress is defined as a state of worry caused by a difficult situation. It’s always been a part of human life and is a fundamental element for our survival.  Stress is a natural part of life and impacts us almost daily. Whilst a small amount of stress can actually be good for us (believe it or not), chronic stress and burnout can end up negatively impacting almost all of our body’s processes—including our menstrual cycles. The bodily changes you feel when you’re stressed are akin to what your ancestors felt when they were running away from life-threatening predators. Except, nowadays, predators take on the shapes of boardrooms, bosses and bills. Stress is classed as a state of ‘disharmony’, disrupting the carefully coordinated balance that your body is consistently fine-tuning. Usually, your body’s reaction to stress is temporary and it’s able to revert to its previous state.   However, it’s increasingly common to be exposed to prolonged periods of stress or several different, unresolved stressors, which cannot be adapted to—resulting in chronic stress. This can feel never-ending and all-encompassing, impacting both our mental and physical health.  This is the type of stress linked to depression, fertility issues and other health problems. The science behind stress The body’s reaction to stress is coordinated by something called the hypothalamic-pituitary-adrenal axis (HPA axis). The hypothalamus, in the brain, helps encourage the production of hormones like cortisol aka stress hormone (1). These kickstart the body’s stress response and divert the brain’s attention away from other processes, like coordinating your reproductive system. When we are chronically stressed, our cortisol remains constantly high. This can put us in a constant state of ‘fight or flight’, leading to the body being unable to adequately support other bodily functions. What is a ‘normal’ period? To understand how stress may affect your menstrual cycle, it’s important to understand what a ‘normal’ or average cycle looks like. A ‘normal cycle’ can last anywhere from 21 to 35 days, depending on the individual.   A one-off longer or shorter cycle is still considered normal, but if yours are consistently irregular, it’s worth getting checked out as they could be caused by an underlying health condition, such as PCOS. Can stress affect your period? Stress can affect your period in many different ways. This is because your menstrual cycle and your body’s response to stress are both coordinated by the same part of the brain—the hypothalamus. If you have high cortisol it can disrupt the hypothalamus, disrupting the production of gonadotropin-releasing hormone (GnRH).  GnRH controls the production and regulation of follicle-stimulating hormone (FSH) and luteinising hormone (LH), two hormones incredibly important for the regulation of the menstrual cycle.  If FSH and LH become disrupted, you’re likely to experience disruptions to ovulation and menstrual cycle regularity. This can also disrupt sexual desire and arousal. One study found that women experiencing high levels of stress showed lower levels of sexual desire, linked to elevated cortisol levels. Can stress delay your period? Elevated cortisol levels as a result of stress can effectively delay ovulation by blocking the release of LH. Without a surge in LH, you won’t ovulate. This can make your cycles longer and potentially heavier. On the flip side, high levels of stress are also associated with shorter cycles. Can stress stop your period? In situations of chronic stress, ovulation can be prevented for long periods of time (known as chronic anovulation), stopping your period altogether. This can be due to psychological stress but also periods of intense exercise or eating disorders. Missing periods due to stress is called functional hypothalamic amenorrhoea. How do I know if stress is the cause of my menstrual cycle changes? Without the analysis of a medical professional or hormone test, it’s not possible to know for certain that stress is the cause of your menstrual cycle changes.  Lifestyle factors often work in tandem. Changes to your cycle may be because of a handful of interacting factors. That being said, there are steps you can take to get a better idea of whether stress could be behind your period irregularities.  Tracking your periods and symptoms, either with a period tracking app or just using a calendar or diary can help you understand if stress is linked to your cycle. Make a note of how irregular or regular your periods are and any symptoms like pain, acne and how you’re feeling emotionally, including stress.  You can also take our Online Health Assessment. Our assessment analyses your biometrics, medical history, periods and lifestyle factors, to calculate your risk profile and help determine the cause of your symptoms. By looking at the pattern between your menstrual cycle and stress levels, you should be able to spot if there’s any obvious link. Even if they aren’t linked, just being able to rule out stress as the cause of your period troubles is helpful—you’ll then at least know to direct your attention elsewhere. If you are under stress consistently, it may be difficult to pinpoint that this is what’s causing your irregular cycles. The best way to establish what is going on with your cycles is to look at your hormone health – you can do this using our tailored at-home advanced hormone and fertility test. By looking at hormones such as testosterone and thyroid-stimulating hormone, we can eliminate other things which can affect your cycle, such as PCOS or abnormal thyroid function. How can we manage stress? Although experiencing stress might not feel great in the moment, it does serve an important purpose and actually, in small doses, it’s a powerful motivator, helping us to work harder and achieve our goals.  Although our modern-day stressors might not be as dangerous as the threats facing our ancestors, they do still […]

Absenteeism, presenteeism, and stigma in the workplace. The profound impact of menstruation on workplace productivity and attendance is often overlooked, but period, PMS and symptoms associated can be extremely debilitating. Every day, millions of people show up to work and perform at the highest level while silently navigating the complexities of reproductive health. Many might try to manage it with home remedies and over the counter medication; for up to 1 in 10 women, it can cause severe debilitating chronic pain, impacting their daily routine due to a condition called endometriosis. “I never did say to work, that I was off because of period pain because I worked for years in a very male dominated banking environment…I felt there was an issue of stigma with saying I was off…I would have to invent reasons month after month, soldier on, dose yourself up and try and get through the days best you could. Then collapse when you go home.” – (Gender Health Gap Report, 2024) The Data: How can employers support this? 1. Help people understand the basics of their reproductive health. A supportive workplace can improve employee productivity and loyalty, reduce absenteeism and improve DE&I. Here are a few recommendations on how you can support your employees better through inclusive healthcare. Many women grew up believing period pain was a normal part of life. Social and cultural taboos combined with a lack of education on menstrual health could explain why someone might not discuss their period-related symptoms or ignore them altogether. Employers can help break this cycle of misinformation by referring employees to resources to understand their reproductive health better. Additionally, organising lunch & learns and workshops can be a stepping stone to open dialogue and normalise conversations around period pain in the workplace. 2. Establish support in the workplace. Experiencing pain in the workplace is challenging for employees. Providing flexible working hours, rotas and arrangements such as a quiet room, period products, heat packs, or modified workstations can support employees with the time they might need to prioritise their health. Research on menstrual workplace policies from Monash University found that flexible policies based on the individual employee’s needs were more effective than a blanket period leave. Beyond policies, ensuring that managers are well-trained to talk about reproductive health and support employees through their struggles will also help create a supportive environment at work. 3. Find the right partner to support reproductive health policies. Taking the first steps in making the workplace more period-friendly is a big task, which is why it is important to find a reputable expert provider who can support employers in educating their workforce, instating progressive policies and providing solutions to employees’ worries around their reproductive health. Hertility Health is shaping the future of reproductive health by giving women the ability to understand and manage their hormone health from menstruation to menopause. We believe in a proactive approach to reproductive health – by detecting issues early, helps prevent issues later down the line. We deliver our world-class reproductive health benefits to many leading companies and improve access to reproductive healthcare and education. We provide in personalised plans – for you and your employees – and offer a range of corporate plans and coverage options to suit your needs, from educational workshops, to female health assessments and consultations with in-house experts. For early adopters that have existing fertility treatment benefits for employees, we help you protect your budget – our proactive hormone tests are a fraction of the clinic price and by identifying issues early we can prevent costly treatment. Where treatment is required, our blood tests are accepted by partner clinics and reduce time to treatment. We provide DE&I impact reports, so you can see the tangible impact on your workforce and your bottom line. To learn more about our Reproductive Health Education and Benefits for Employers, reach out to benefits@hertilityhealth.com or visit our website https://hertilityhealth.com/workplace

Period poo. What is it and why does it happen? In this article, we take a look at why our bowel movements seem to wreak havoc during our periods and some tips for managing any symptoms. Quick facts: What is period poo? Period poo is basically any changes to your bowel movements during your period. This can be loose stools, diarrhoea, more frequent bowel movements, constipation, or more wind.  Although period poo might not be the most hotly debated dinner party conversation, it’s actually really common—with one study citing that up to 73% of people who menstruate experience period poo.  What causes period poo? Throughout our menstrual cycles, our hormones cause a whole host of changes, some of which can affect our digestion and gastrointestinal tract. Here are some of the changes that occur in the lead-up to our periods specifically, which can lead to changes in bowel movements.  Prostaglandins and muscle contractions Prostaglandins are chemical messengers that your uterus (womb) produces around your period. They act on the uterine smooth muscles to help them contract and shed their lining each month. This means you have prostaglandins to thank for your period cramps.  Sometimes, excess prostaglandins can act on smooth muscles elsewhere in the body, including the bowels. This causes an increase in muscle contractions in the intestines and bowel, leading to loose stools or diarrhoea.  On the flip side, too little prostaglandins can have the opposite effect, causing things to slow down in the gastrointestinal tract. This is one theory of why some people experience constipation at the time of their period (3).  Increased progesterone levels Although the exact relationship is not well understood, your gut – as well as your uterus – also has receptors for sex hormones like progesterone and oestrogen. This means your gut is sensitive to the changes in hormones that come about at the time of your period. Just before your period, progesterone levels are high, which can cause gut sensitivity, including bloating, diarrhoea or constipation, in some people.  For people who already suffer from Irritable Bowel Syndrome, this can be exacerbated at this time of the month. If you’re experiencing flare-ups, stick to your prescribed symptom management plan and if you think you need more relief, speak to your doctor about alternative ways to manage your IBS during your period.  Diet changes and cravings An increase in progesterone levels just before our periods can cause cravings for certain foods. Changing your diet, for example eating more, consuming more carbs and processed foods, consuming less fibre and not drinking enough water can all affect digestion and lead to changes in stools.  Increased stress or anxiety A common symptom of Premenstrual Syndrome (PMS) that is often experienced just before or during our periods is increased levels of anxiety, overwhelm or stress. Each of these symptoms can lead to a change in bowel movements, as our guts are intimately linked to our stress levels (think the nervous poos).  How to manage period poo symptoms There are certain lifestyle changes you can adopt to help alleviate any gastrointestinal symptoms you notice around your menstrual cycle. Try some of the following tips to help make that time of the month a little less crappy. Eat lots of natural fibre  Fibre is like your bowel’s best friend—it helps to move things through and keep your digestion and bowel movements regular. Make sure you’re getting lots of high-fibre foods like fruit, vegetables and whole grains in the run-up to and during your period. Try not to overeat processed foods and carbs as these often have the opposite effect.  Limit caffeine If you’re experiencing loose stools and diarrhoea, try cutting down on your caffeinated drinks and foods (like dark chocolate). This is because caffeine stimulates the gut, resulting in you needing to go more frequently.  Coffee in particular (even decaf) can stimulate the gut, so best to skip the morning coffee at your time of the month and opt for another way to energise yourself, like a morning walk or some yoga. If you do experience diarrhoea, be sure to increase your water intake to prevent dehydration.  Get moving  Movement and exercise are great for the gut and bowels. They help keep things moving through your digestive tract and can reduce the instances of bloating as well as helping to alleviate period cramps. If you’re not feeling up for your usual fitness routine, some yoga or simple stretching and walking are all great options.   Stay hydrated If you’re experiencing either constipation or diarrhoea, then drinking plenty of water is essential. Being adequately hydrated is very important for a healthy functioning gut and if you have diarrhoea you are at risk of becoming dehydrated quickly if you aren’t replacing lost fluids.  Painkillers and stool softeners It’s not unusual to mistake period cramps for bowel urges and vice versa during your period. Pain and cramps associated with either gut problems or your period can be eased with exercise, heat pads, or painkillers. You can also try stool softeners if you’re experiencing bad constipation. Resources:

Ovulation tracking can be a great way of either avoiding or planning sex during your fertile window. There are lots of ovulation detection methods, each with varying degrees of reliability. Read on to find out which could be right for you. Quick facts: What is the fertile window? The fertile window is 6 days around the midpoint of your cycle when you ovulate. It includes the 5 days before ovulation and the day after.  Ovulation is when you release an egg from one of your ovaries, and it travels down the fallopian tube to the uterus where it hopes to reach a sperm and be fertilised.  If you have regular periods, it is a good sign that you are ovulating (releasing eggs), every month. Your egg is capable of being fertilised 12 to 24 hours after ovulation but sperm can survive in the female genital tract for up to five days. So it’s possible to get pregnant if you have sex in the days leading up to ovulation. Ovulation tracking methods Lots of people choose to track ovulation, either to avoid or to plan to have sex during their fertile window. There are a few different methods available to predict your fertile window each month, but not every method will work for everyone—so it’s useful to try a few to find your fit.  Cycle tracking Tracking your periods is a helpful starting point for finding your fertile window. If your cycle is like clockwork and lasts 28 days, the chances are you’ll ovulate halfway through your cycle on day 14. Everyone’s cycle is unique and often not 28 days. It’s important to keep track of how long your cycles last, how long your periods are and any symptoms along the way. Ovulation generally occurs 11 to 16 days before your next period but this can also vary from cycle to cycle. You can use cycle tracking apps, some of which will predict your fertile window based on your previous cycle data—but these are not always 100% accurate.  Ovulation detection kits Ovulation detection kits involve a pee stick, which you use when you’re around the time in your cycle when you’re approaching ovulation. Ovulation sticks are considered the best way to identify if you are ovulating  From the start of your cycle, your oestrogen levels will increase to thicken the lining of your womb in preparation for pregnancy. When oestrogen levels reach a certain point, it signals the release of luteinizing hormone (LH), which triggers ovulation. Although LH is always present at a low level, it significantly increases 24-36 hours before you ovulate, known as the LH surge, which is what the kits detect. Changes in cervical mucus  The consistency of your cervical mucus (discharge) changes throughout your menstrual cycle. Just before ovulation, your discharge becomes clear and stretchy, a bit like egg whites. This is to help the sperm swim through the cervix and towards the egg.  Although this can be a good indicator of when you’re nearing ovulation, remember the appearance of discharge can also be affected by many other factors. This includes infections, sex and medications, and can also naturally alter within each cycle. Basal body temperate tracking After you ovulate, your basal body temperature (BBT) increases by 0.4-1°C. It is unlikely you’ll be able to feel this change, but it can be monitored with an accurate thermometer.  To use this method effectively, you must take your BBT first thing every morning before getting up, to get an accurate reading.  Again, there are lots of things that can cause your resting temperature to vary, such as sleep changes, alcohol consumption and fighting off a cold. This means using temperature changes alone may not be the most reliable. It is also important to consider that this method will only tell you that you have ovulated and won’t be able to predict your fertile window ahead of time.  Changes in saliva Your saliva can also vary throughout your cycle. High levels of oestrogen just before ovulation can cause there to be more salt in your saliva, which can be tracked using a testing kit. A specific pattern is seen in the saliva at ovulation which is called “ferning”, but this can be quite difficult to identify.  Similar to BBT tracking, saliva testing is not always reliable, as it can be easily influenced by the things you eat and drink, so shouldn’t be used alone.  Ovulation pain  Ovarian pain, also known as Mittelschmerz, is a fairly common symptom experienced by around one in five people who menstruate. Ovulation pain can be caused by stretching of the sac of fluid which contains the egg (the follicle) during its development, or by ovulation itself (when the egg is released from the follicle).  This isn’t a reliable method of fertility tracking and isn’t usually recommended as it can also vary from cycle to cycle. If you’re experiencing pain that’s disrupting your daily activities, speak to a specialist about treatment or pain relief options. Understand your cycle As ovulation is controlled by your menstrual cycle hormones, testing your hormones can give you insights into whether you’re ovulating regularly or not.  If you’re experiencing any symptoms like irregular periods, long or short cycles, it’s a good idea to get your hormones tested to understand what’s going on with your cycle hormones.  Check out our at-home Hormone & Fertility tests to find out more. 

Your menstrual cycle is the full sequence of hormonal and physical changes your body runs from the first day of one period to the first day of the next, not just the days you bleed. Your period is simply the part you can see. Getting to know it is one of the most useful things you can do for your health: it helps you make sense of your periods, spot your own patterns, and notice when something’s changed. And yet most of us were taught remarkably little. Hertility’s own peer-reviewed study of 383,085 UK women found that more than one in five didn’t know their cycle length, rising to one in three of those under 25. We really think that needs to change. Here’s exactly what happens between one period and the next: the phases, the hormones behind them, when ovulation happens, and what counts as normal. Quick facts: What is the menstrual cycle? First things first: your period and your menstrual cycle aren’t the same thing. The menstrual cycle is the series of hormonal and physical changes that happen from the first day of one period to the first day of the next.  So, if your period starts on 1 June and your next one starts on 29 June, you had a 28-day menstrual cycle. The first day you have a full bleed is day 1, spotting doesn’t count. Then you count each day until your next period begins. Underneath, two processes run in tandem. The ovarian cycle is what’s happening in your ovaries  – follicles develop, an egg may be released at ovulation, and the ovary then prepares for a possible pregnancy. The uterine cycle is what’s happening to your endometrium (your womb lining) – it sheds during your periodand grows back in preparation for an embryo to implant.  Both are carefully regulated by four cycling hormones – oestrogen, progesterone, luteinising hormone (LH) and follicle-stimulating hormone (FSH) and, as you’ll see, they map neatly onto each other. It sounds complex, but it’s far easier to follow phase by phase. How long is a normal menstrual cycle length? Thinking that every menstrual cycle is 28 days can be misleading for many women. For adults, a cycle of roughly 21-35 days is within the expected range, so 28 days can be perfectly normal, but so can 24, or 31. In fact, a study examining over 600,000 cycles found that only 13% of cycles in the study group were 28-days long – 29.3 days was the average.  Rather than expecting your to body fit a textbook number, it’s far more useful to know what’s usual for you. Further, a little month-to-month variation is common. Illness, stress, changes in exercise, energy intake and weight, and different life stages can all make it a little longer or shorter than expected. A ‘regular’ cycle doesn’t mean your period lands on the same date every month, just that it tends to follow a reasonably predictable pattern. And there’s a real difference between feeling regular and actually knowing your numbers: in Hertility’s research, nearly 5% of women who described their cycles as regular and gave a cycle length were, in fact, reporting one outside the 21-35-day range. Which is exactly why knowing your actual figures beats a vague ‘regular’ or ‘irregular’. What counts as an irregular menstrual cycle? For most adults, cycles that are repeatedly shorter than 21 days or longer than 35 are generally considered irregular, but the numbers aren’t the whole story. If your periods always come every 27-30 days and suddenly start arriving every 40, that change is useful information to know. Plenty of things can influence your cycle, and an irregular period doesn’t automatically mean something’s wrong. Common reasons include the first few years after periods begin (most women’s menstrual cycles don’t regulate until they are ~25 years old) , pregnancy, breastfeeding, perimenopause and hormonal contraception, as well as stress, major changes in weight or energy intake, and intensive exercise. Underlying causes include thyroid conditions, raised prolactin and PMOS, along with some medications. If your periods suddenly become irregular, stay that way for several cycles, or come with other symptoms, it’s worth understanding why. If irregular periods, missing periods or symptoms that don’t quite add up sound familiar, our Online Health Assessment is a good first step towards understanding what’s going on. How long should a period last? A period usually lasts 2-7 days, with 5 to 6 days being most common. Some people naturally have short, light periods; others bleed for longer or more heavily, and flow is often heavier on some days than others. There’s no single pattern everyone has to match, what’s useful is knowing what’s normal for you, so a sudden change stands out. What is a normal amount of bleeding during my period? Rather than chasing an exact millilitre figure, the more useful question is simpler: is your bleeding getting in the way of your life? Signs your periods may be heavy include: Heavy periods can also lead to iron-deficiency anaemia, which may leave you unusually tired, dizzy or short of breath. NICE defines heavy menstrual bleeding by its impact on your quality of life rather than a strict volume, so if it’s disrupting your everyday life, that alone is reason enough to get it checked. You don’t have to just cope. What are the phases of the menstrual cycle? The cycle is usually described in four stages, though they overlap rather than switching cleanly: Biologically, there’s a little overlap between these phases. For example, your period actually happens during the beginning of the follicular phase. But thinking about the cycle in four stages is a useful way to picture what’s happening. The follicular phase: from your period to ovulation The follicular phase starts on the first day of your period and ends when you ovulate. For most people, this phase lasts about 10-22 days, but this can vary. At the start of a new cycle, oestrogen and progesterone are low, so the brain releases gonadotrophin-releasing […]