What is PCOS and how does it affect fertility?
PCOS — polycystic ovary syndrome — is a hormonal condition that affects how the ovaries function, and it's one of the most common causes of ovulation-related infertility. It causes higher-than-typical levels of androgens and often irregular or absent ovulation, meaning an egg isn't released reliably each month. Without regular ovulation, there are fewer chances to conceive in any given cycle, which is the main reason PCOS makes getting pregnant harder for many people. PCOS doesn't mean you can't get pregnant — it means your body may need help releasing an egg predictably, and that's very treatable in most cases.
PCOS is diagnosed using the Rotterdam criteria, which requires at least two of three features: irregular or absent ovulation, higher androgen levels (shown on a blood test or through symptoms like excess hair growth or acne), and ovaries that appear to have many small follicles on ultrasound. Having polycystic-appearing ovaries alone, without the hormonal or ovulation changes, isn't the same as having PCOS. The condition varies widely between people — some have very irregular cycles and visible symptoms, others have milder versions only picked up when they start trying to conceive. Talk to your doctor about which features apply to you rather than assuming from symptoms alone.
How do you know if PCOS is affecting your ability to conceive?
The clearest sign that PCOS may be affecting your fertility is irregular, infrequent, or absent periods, since this usually means you're not ovulating regularly or at all. Cycles longer than about 35 days, fewer than 8 periods a year, or long unpredictable gaps between periods are all patterns worth mentioning to your doctor. Other common PCOS signs — acne, excess facial or body hair, scalp hair thinning, or weight gain that's hard to shift — can appear alongside the cycle changes, though not everyone with PCOS has all of them.
Tracking your cycle for a few months gives your doctor useful information, even before any testing. Note how many days pass between periods, whether you notice signs of ovulation like changes in cervical mucus, and any other symptoms you've spotted. Tools like babybumpkit's [ovulation calculator](/ovulation-calculator) can help you notice patterns, though they can't diagnose PCOS on their own — a blood test and ultrasound, interpreted together by your doctor, are what confirm it. If you suspect PCOS and haven't been formally diagnosed, it's worth raising with your doctor now rather than waiting.
Can you get pregnant naturally with PCOS?
Yes — many people with PCOS conceive naturally, though it may take longer than average because ovulation happens less predictably or less often. Some people with PCOS ovulate most cycles with mild irregularity, while others ovulate only a few times a year or not at all without treatment. The unpredictability, not an absence of fertility, is usually the core issue, which is why identifying your own pattern matters more than a general statistic. PCOS affects each person differently, so how much it changes your timeline depends on your specific hormone pattern and how consistently you ovulate.
If your cycles are irregular, standard ovulation-prediction methods based on a 28-day cycle won't be reliable, and tracking signs like basal body temperature, cervical mucus changes, or using ovulation predictor kits over several cycles can help identify whether and when you're ovulating. Babybumpkit's [conception calculator](/conception-calculator) can help you think through timing once you have a clearer sense of your pattern, though it works best alongside — not instead of — direct signs of ovulation. Because cycles vary so much with PCOS, many people find it worth discussing tracking methods with their doctor rather than guessing alone.
What treatments help with PCOS-related infertility?
Treatment for PCOS-related infertility usually starts with lifestyle changes and ovulation-inducing medication such as letrozole or clomiphene, and moves toward additional options like metformin, gonadotropins, or IVF if needed. Most people are offered the least invasive, most affordable option first, then step up if that doesn't lead to ovulation or pregnancy. Which option makes sense for you depends on your specific hormone levels, weight, and how your body responds to initial treatment. Your doctor tailors the plan to your situation rather than following a single fixed path for everyone with PCOS.
The table below gives a general sense of how treatment options are usually sequenced, though your doctor may adjust the order based on your specific results. | Approach | What it does | Typically tried | |---|---|---| | Lifestyle changes (weight, activity) | Can improve hormone balance and restore ovulation in some people | First, often alongside other treatment | | Letrozole or clomiphene | Oral medication that triggers ovulation | First-line medication | | Metformin | Improves insulin sensitivity, sometimes helps ovulation, especially with insulin resistance | Alongside or after first-line medication | | Gonadotropins | Injectable hormones that stimulate the ovaries more directly | If oral medication doesn't lead to ovulation | | IVF | Egg retrieval and lab fertilization, bypassing ovulation timing | If other options haven't led to pregnancy |
None of these treatments guarantee pregnancy, but they meaningfully raise the chance of ovulation and conception for many people with PCOS. Success varies by individual factors like age, weight, and how PCOS presents for you specifically. If one approach doesn't work within a few cycles, that doesn't mean nothing will — it usually means it's time to talk with your doctor about the next step, not to give up.
How does PCOS affect pregnancy once you conceive?
PCOS is linked to a somewhat higher risk of miscarriage, gestational diabetes, high blood pressure disorders like preeclampsia, and preterm birth, though most people with PCOS go on to have healthy pregnancies. The exact reasons aren't fully understood, but insulin resistance and hormone levels are thought to play a role in several of these risks. Having PCOS means your pregnancy may be monitored a little more closely, not that a specific complication is expected. Many of these risks can be reduced or managed with monitoring and, where relevant, lifestyle adjustments made with your provider's guidance.
If you have PCOS and are pregnant or trying to conceive, your provider may recommend earlier or additional screening for gestational diabetes, closer blood pressure checks, or specific guidance around weight gain during pregnancy. Call your provider the same day if you notice symptoms like a severe headache, vision changes, sudden swelling, or reduced fetal movement later in pregnancy, since these can signal blood pressure problems that need prompt attention. None of this means something is wrong — it means your pregnancy is being watched with your specific history in mind. Bringing up your PCOS diagnosis early with your prenatal care team helps them tailor that monitoring appropriately.
When should you seek help if you have PCOS and are trying to conceive?
If you have PCOS and know your ovulation is irregular or absent, it's reasonable to seek fertility evaluation as soon as you start trying, rather than waiting the standard 6 to 12 months recommended for people without a known ovulation issue. Because PCOS itself already explains a likely cause of difficulty conceiving, waiting to see what happens often just delays treatment that could help. Our guide to [fertility evaluation](/getting-pregnant/fertility-evaluation) walks through what that first visit typically covers, including which tests are relevant if PCOS is suspected. Age also factors in — see our guide on [age and fertility](/getting-pregnant/age-and-fertility) if you're 35 or older and managing PCOS at the same time.
Contact your doctor sooner, regardless of how long you've been trying, if you have very infrequent or absent periods, signs of significantly high androgens like rapid new hair growth or worsening acne, or if you've had two or more miscarriages. These aren't necessarily emergencies, but they're not things to wait out on your own either. If you're feeling anxious or discouraged about trying to conceive with PCOS, that's a common and reasonable response — say so to your provider, since they can tell you what's realistic for your specific hormone pattern and history, which a general article like this one cannot.
What can you do now if you have PCOS and are trying to conceive?
Track your cycle so you and your doctor can see your actual ovulation pattern, ask about a baseline hormone panel and ultrasound if you haven't already been formally diagnosed, and bring up treatment options rather than waiting to see if things resolve on their own. Modest weight changes — even a small percentage of body weight, for those carrying more weight than typical — can help restore ovulation for some people with PCOS, though this isn't the case for everyone and isn't the only path forward. Small, sustainable changes tend to matter more than dramatic ones for long-term hormone balance.
Babybumpkit's [ovulation calculator](/ovulation-calculator) and [conception calculator](/conception-calculator) can help you make sense of your cycle once you have a clearer picture of whether and when you're ovulating, though they work best used alongside your doctor's guidance rather than in place of it. If initial treatment doesn't lead to ovulation or pregnancy within the timeframe your doctor suggests, that's a normal part of the process for many people with PCOS, not a sign that nothing will work. Most people with PCOS who want to conceive are eventually able to, often with support that's straightforward and well established.