Tag: PCOS ovulation

If you have PMOS (polyendocrine metabolic ovarian syndrome, formerly PCOS), figuring out when or whether you’re ovulating can feel a little like trying to hit a moving target. While you can track ovulation with PMOS, the usual methods can be less reliable. The good news is that with the right combination of methods, and the right timing, you can build a clear picture of whether and when you’re ovulating. Quick facts Can you ovulate if you have PMOS (PCOS)? Yes, having PMOS doesn’t mean you never ovulate. What it commonly causes is ovulatory dysfunction. This means ovulation may happen less often, less predictably or not at all during some cycles, which is why periods can be irregular or absent and why you can sometimes have a bleed without having released an egg. But there’s a lot of variation.You might ovulate most months but on different cycle days. Or you may have some cycles where ovulation doesn’t happen, known as an anovulatory cycle. Not sure whether PMOS (or something else) is behind your irregular cycles? Hertility’s Advanced Hormone & Fertility Test looks at the hormones involved including LH, FSH, AMH, testosterone, prolactin and thyroid to help explain what’s driving your pattern. Why is ovulation harder to track with PMOS (PCOS) ? Two things make it trickier. First, cycles are often long or irregular and less predictable.  Most tracking methods and apps assume ovulation lands mid-cycle, roughly two weeks before your period, but with PMOS the follicular phase (the first half, before ovulation) can stretch out or vary a lot month to month, so ovulation can happen late, early, or not at all. It’s also why the textbook idea that everyone ovulates on day 14 really doesn’t work. Second, and most importantly for tracking, your baseline hormones may already be raised. Many people with PMOS have persistently high LH, which is exactly the hormone home ovulation kits measure and exactly why those kits so often mislead. More on that next. How do I know if I’m ovulating with PMOS (PCOS) ? There isn’t one perfect at-home test. Instead, it can help to combine information that suggests ovulation might be approaching with information that tells you it probably already happened. 1. Watch your cervical mucus. In the days before ovulation, cervical mucus usually becomes wetter, clearer and more stretchy (like raw egg white) as oestrogen rises. These changes create an environment that helps sperm survive and travel through the reproductive tract, so they can be a useful sign that your fertile window may be approaching. With PMOS, fluctuating hormones can sometimes mean you notice fertile-looking mucus more than once during a long cycle. So think of cervical mucus as another piece of information rather than confirmation that ovulation definitely happened. 2. Track your basal body temperature (BBT). Progesterone causes a small rise in your resting temperature after ovulation, so charting BBT over a few cycles can confirm, in hindsight, that ovulation likely happened and reveal whether you’re ovulating at all. What it can’t do is give you any warning, by the time your temperature rises, ovulation has already been and gone. It’s also easily thrown off by poor sleep, waking at different times, illness, alcohol, travel and shift work, and long cycles can make the pattern harder to read. ASRM describes BBT as inexpensive but often unreliable, and doesn’t recommend it routinely for evaluating ovulation. So if you enjoy charting it and your pattern is clear, it’s a good piece of the picture, just don’t feel you have to wake up to a thermometer every morning to understand your fertility. 3. Track your cycles. Period tracking apps are useful for recording, less so for predicting. Most basic cycle apps estimate your fertile window from your previous period dates and average cycle length. If your cycles are fairly consistent, that gives a rough idea of when ovulation might happen, but if you have PMOS and your cycles vary a lot, the app is essentially trying to predict an unpredictable event from past averages, and calendar-based prediction is known to do this poorly. Research has found that calendar-based apps can perform poorly at identifying the actual day of ovulation because fertile-window timing naturally varies between cycles. That doesn’t make your app useless. It’s genuinely helpful for logging things like the first day of your period, period and cycle length, flow, cervical mucus changes, ovulation-test results and symptoms. Think of it as a record of what your body has done, rather than a crystal ball for what it’ll do next. Do ovulation predictor kits work with PMOS (PCOS) ? Often, no, or at least not reliably. OPKs measure Luteinizing Hormone (LH) in your urine. They’re designed to detect the LH surge that typically happens 24-36 hours before ovulation. But with PMOS that baseline is frequently already elevated, and some people have several small LH rises across a cycle rather than one clean peak. That leads to two problems. The kit can read your already-high LH as a surge and show repeated positives even when no egg is released or several apparent surges during one cycle. Or a genuine surge can be too small to stand out against a high baseline, so you miss it entirely. The issue is that most OPKs work on fixed thresholds rather than measuring your actual hormone level, fine if your levels sit in the average range, less so if PMOS keeps yours unusually high. Different brands can even have different thresholds and give you different results and either way, no OPK confirms ovulation actually happened, it only flags a likely fertile window. None of this means throwing the kits away. If you use them, fertility specialists suggest choosing a kit with a threshold set well above your baseline, or better a quantitative test or monitor that shows your actual LH level rather than a simple positive/negative. They’re most useful paired with a method that confirms ovulation after the fact. And if you repeatedly get positives without any sign of ovulation, […]

Polyendocrine metabolic ovarian syndrome (PMOS) is the condition you may still know as polycystic ovary syndrome (PCOS). It’s one of the most common hormonal conditions, affecting around 1 in 8 women. But despite the old name, it has never been just about the ovaries. PMOS can affect your periods, ovulation, skin, hair, metabolism, fertility, sleep and mental health. It can also look completely different from one person to another. One person may have very irregular periods and excess facial hair, while another has acne, fairly regular cycles and no obvious symptoms until they start trying to conceive. That variation is one of the reasons PMOS can be difficult to recognise and why diagnosis is sometimes delayed. Whether you have recently been diagnosed, think your symptoms could be linked to PMOS, or have been living with the condition for years, this guide covers PCOS symptoms, diagnosis, fertility, treatment, nutrition and long-term health. Quick facts:  If you are wondering whether your symptoms could be linked to PCOS, Hertility’s Advanced Hormone and Fertility Test can help build a clearer picture of your hormones, cycle and symptoms to help you understand what’s going on. Why was PCOS renamed PMOS? On 12 May 2026, the international PCOS community officially adopted the name polyendocrine metabolic ovarian syndrome, or PMOS. The previous name, polycystic ovary syndrome, could be misleading for several reasons. Firstly, the “cysts” associated with PCOS are not typical ovarian cysts. They are usually small ovarian follicles containing immature eggs. Secondly, you can have the condition without having polycystic-looking ovaries at all. Most importantly, the old name placed the emphasis on the ovaries when the condition can affect much more than reproductive health, including metabolism, hormones, mental wellbeing and long-term health. The new name was developed through an international process involving healthcare professionals, researchers and people living with the condition. If you already have a PCOS diagnosis, you do not need to be diagnosed again. Your diagnosis has not changed. You will also continue to see the term PCOS in medical records, research and online searches, which is why we use both PCOS and PMOS throughout this guide. Read more: PCOS has been renamed PMOS — here’s what that means for you. How common is PCOS? The World Health Organization estimates that PMOS affects up to 13% of women of reproductive age, making it one of the most common hormonal conditions worldwide, and that up to 70% of those affected may not know they have it. In the UK, the NHS estimates it affects about 1 in every 10 women. Part of the problem is that there’s no single way it presents. Diagnosis can also take time. In one international study, over a third of people with PCOS waited more than two years for a diagnosis, and almost half saw three or more health professionals before getting one. What are the common symptoms of PCOS? PCOS symptoms can affect your menstrual cycle, skin, hair, metabolism, sleep, mood and fertility. You do not need to have every symptom to have the condition. Menstrual cycle-related symptoms One of the most common features is irregular ovulation. which can make periods longer, unpredictable or absent for months, sometimes with heavier or prolonged bleeding after a long gap.  You may ovulate later, less often, or not at all in some cycles (an anovulatory cycle). In adults more than three years past their first period, cycles shorter than 21 days, longer than 35 days, or fewer than eight a year are considered irregular. Having regular periods don’t completely rule out PCOS, though more on that below.  If you want to understand your own cycle, see our guide Menstrual Cycle 101: Your Complete Guide to How Your Cycle Works Skin and hair-related symptoms Higher androgen activity (androgens include hormones like testosterone) can contribute to acne, oily skin, excess facial or body hair (known as hirsutism), often on the chin, upper lip, chest, abdomen or back, and scalp hair thinning, often noticed as a widening parting.  Hair-growth patterns vary a lot between individuals and ethnic groups, which matters when symptoms are assessed. Some people also develop acanthosis nigricans, darker, thicker, velvety-looking skin around the neck or underarms, which can be linked to insulin resistance. To find out more about how hormones affect your skin, read our guide to skin and hair changes. Weight gain or difficulty losing weight Some people experience weight gain or find weight harder to manage, but you don’t need to be overweight to have PCOS. It affects people across all body sizes, and insulin resistance can occur in people who aren’t overweight. Fatigue and sleep problems Significant tiredness is common, although fatigue has many causes and shouldn’t automatically be blamed on hormones. Obstructive sleep apnoea is more common in PMOS, even after taking BMI into account. So if you snore, wake up unrefreshed or feel tired all day, it’s worth talking to a healthcare professional. Mental health-related symptoms PCOS isn’t only physical. Depression and anxiety are more common, and symptoms like acne, unwanted hair growth, fertility difficulties, body-image concerns and weight stigma can all affect quality of life. Current guidance recommends that psychological wellbeing forms part of PMOS care, including screening and support for depression, anxiety and eating disorders. Difficulty conceiving PCOS is a leading cause of irregular ovulation and anovulatory infertility. If ovulation happens less often, there are fewer chances for egg and sperm to meet. But that’s very different from saying everyone with PCOS is infertile; many conceive naturally, and effective treatments exist when ovulation needs support. What causes PCOS? There is no single known cause of PCOS. Instead, it appears to develop through a combination of genetics, hormone signalling, ovarian function, metabolism and environmental factors. Two factors that are particularly important are androgens and insulin. High levels of Androgens Androgens are a group of hormones, the most common being testosterone. They are produced mainly by the ovaries and adrenal glands and have roles in reproductive health, bone and muscle health, sexual function and wider physiology. […]