Polycystic ovary syndrome (PCOS) is a common hormonal condition that can affect menstrual cycles, ovulation, skin, hair growth and metabolism. It is also one of the conditions that may make it more difficult to become pregnant.
If you have PCOS, you may have irregular periods or find it difficult to predict when you ovulate. You might also wonder whether you will be able to conceive naturally or need fertility treatment.
The good news is that many people with PCOS can become pregnant. Some conceive without treatment, while others benefit from medical support to encourage ovulation. The right approach depends on your symptoms, overall health, age and other fertility factors.
1. What Is PCOS?
PCOS stands for polycystic ovary syndrome. It is a hormonal and metabolic condition that can affect how the ovaries function.
People with PCOS may have one or more of the following features:
Irregular or infrequent menstrual periods.
Ovulation that occurs irregularly or does not occur in some cycles.
Higher levels or signs of higher levels of androgens, sometimes called “male-type” hormones.
An appearance of multiple small follicles in the ovaries on ultrasound.
Despite the name, you do not need to have ovarian cysts to be diagnosed with PCOS. The small follicles sometimes seen on an ultrasound are not the same as typical ovarian cysts.
PCOS varies considerably from person to person. Not everyone experiences the same symptoms, and symptoms alone cannot confirm a diagnosis.
2. How Does PCOS Affect Fertility?
The main way PCOS can affect fertility is by interfering with ovulation.
Ovulation is the process in which an ovary releases an egg. For pregnancy to occur naturally, an egg must be released and fertilised by sperm, and the resulting embryo must implant in the uterus.
In some people with PCOS, hormonal signals do not support regular follicle development and egg release. Ovulation may happen less frequently than expected or may not occur in certain cycles.
This can mean:
Periods that are far apart or unpredictable.
Fewer opportunities to conceive throughout the year.
Difficulty identifying the fertile window.
A longer time to become pregnant.
PCOS does not necessarily mean that you have no eggs or that you cannot become pregnant. It often affects the regularity of ovulation rather than completely preventing pregnancy.
Other factors, including age, fallopian tube health and sperm health, can also affect your chances of conception.
3. What Are the Signs of PCOS?
Symptoms can vary, and some people have relatively few noticeable symptoms.
Common features include:
Irregular periods: Menstrual cycles may be longer than usual, infrequent or absent.
Excess facial or body hair: Higher androgen levels can contribute to increased hair growth in areas such as the chin, upper lip or chest.
Acne or oily skin: Some people experience persistent acne, although acne can have other causes.
Hair thinning: Hair on the scalp may become thinner in a pattern associated with androgen activity.
Metabolic concerns: PCOS can be associated with insulin resistance and an increased risk of developing type 2 diabetes.
Difficulty conceiving: Irregular ovulation can make it harder to time intercourse for pregnancy.
Not everyone with PCOS has all these features. If your periods are absent for several months, or you are trying to conceive without success, it is worth discussing your symptoms with a qualified healthcare professional.
4. How Is PCOS Diagnosed?
There is no single blood test that confirms PCOS in every person. A clinician considers your symptoms, medical history, examination and appropriate investigations.
Depending on your circumstances, assessment may include:
Menstrual and medical history: To understand your cycle pattern, symptoms and health history.
Blood tests: To assess hormone levels and exclude other conditions that can cause similar symptoms.
Ultrasound: To examine the ovaries when appropriate.
Metabolic assessment: Such as blood glucose testing, based on your individual risk factors and the clinician's advice.
Other conditions, including thyroid disorders and raised prolactin levels, may sometimes cause irregular periods and need to be considered.
An ultrasound alone should not be used to diagnose PCOS without considering the broader clinical picture. Your clinician will interpret the findings in the context of your age and symptoms.
5. Can You Get Pregnant Naturally With PCOS?
Yes. Some people with PCOS ovulate regularly enough to conceive naturally, while others ovulate less frequently.
If you have irregular periods, it can be more difficult to predict your fertile window. Tracking cycle dates and noticing changes in cervical mucus may provide some clues, but these methods cannot always reliably identify ovulation in PCOS.
Ovulation predictor kits may also be harder to interpret for some people with PCOS because hormone patterns can lead to misleading results.
If you are trying to conceive, your doctor can help assess whether you are ovulating and whether other fertility factors need investigation. You do not need to assume that IVF will be necessary simply because you have PCOS.
6. What Treatments Can Help If You Have PCOS and Want to Conceive?
Treatment depends on whether ovulation is occurring, how long you have been trying, your age and whether other fertility factors are present.
Lifestyle and general health support
If you have PCOS, balanced nutrition, regular physical activity, adequate sleep and appropriate support for metabolic health can be beneficial. For some people, changes in weight may improve cycle regularity, but weight loss is not a universal requirement for pregnancy or a substitute for individualised medical care.
PCOS can affect people at different body sizes. Avoid restrictive diets or unproven fertility supplements promoted as a cure.
Medicines to help ovulation
A clinician may recommend medication to encourage ovulation when PCOS is causing ovulatory infertility. Letrozole is commonly recommended as a first-line ovulation-induction medicine for many people with PCOS who have no other major infertility factors.
Other medicines may be considered depending on your circumstances, medical history and response to treatment.
These medicines require appropriate medical supervision. Do not take fertility medication without a prescription and monitoring plan.
Other fertility treatments
If ovulation-induction treatment is unsuccessful, or other fertility factors are present, your specialist may discuss further options such as injectable medicines, intrauterine insemination (IUI) in selected situations, or in vitro fertilisation (IVF).
IVF is not automatically the first treatment for PCOS. The most suitable plan depends on the complete fertility assessment.
7. Does PCOS Affect Pregnancy Once You Conceive?
Many people with PCOS have healthy pregnancies. However, PCOS is associated with an increased risk of certain pregnancy complications, including gestational diabetes and high blood pressure disorders in pregnancy.
Your pregnancy care team can assess your individual risk and recommend appropriate monitoring. If you have PCOS and become pregnant, tell your healthcare professional so your care can be planned around your medical history.
8. When Should You See a Fertility Specialist?
Consider seeking advice if you have PCOS and are planning a pregnancy, especially if your periods are very irregular or absent.
General guidance recommends fertility evaluation after 12 months of trying if the female partner is under 35, after 6 months at age 35 or older, and sooner for people over 40 or those with known fertility-related conditions. Because PCOS can cause irregular or absent ovulation, a clinician may recommend assessment before these timeframes.
A fertility evaluation may consider ovulation, fallopian tube health, sperm health and other factors. This helps ensure that treatment addresses the actual cause of difficulty conceiving rather than focusing only on PCOS.
Frequently Asked Questions
Does PCOS mean I am infertile?
No. PCOS can make ovulation irregular, which may make conception more difficult, but many people with PCOS become pregnant naturally or with treatment.
Can I have PCOS if my periods are regular?
It is possible. Regular periods do not completely rule out PCOS, and diagnosis depends on the combination of symptoms, clinical findings and appropriate tests.
Can PCOS be cured?
There is currently no single cure for PCOS, but its symptoms and associated health risks can often be managed. Treatment is tailored to your goals, whether you are trying to conceive, managing symptoms or supporting long-term health.
Will I need IVF if I have PCOS?
Not necessarily. Depending on the cause of infertility, treatment may begin with ovulation induction. IVF may be considered if other treatments are unsuitable or unsuccessful, or if additional fertility factors make it appropriate.
Does having PCOS mean I have poor egg quality?
PCOS does not automatically mean that your eggs are poor quality. Ovarian reserve, egg quality and ovulation are different concepts. Age remains an important factor in egg quality, and a specialist can explain what your tests can and cannot tell you.
The Bottom Line
PCOS can affect fertility by making ovulation irregular, but it does not mean that pregnancy is impossible. Many people with PCOS conceive naturally, while others benefit from treatment to support ovulation or address additional fertility factors.
If you have irregular periods or are finding it difficult to conceive, seek personalised advice from a qualified healthcare professional. Understanding your own symptoms and fertility profile is the best starting point for deciding what to do next.
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Medical information disclaimer
This article is for general educational purposes only. It is not a substitute for professional medical advice, diagnosis or treatment. The information has not been medically reviewed by a Dream Baby doctor. Consult a qualified healthcare professional for advice about your individual circumstances.
References
1. American College of Obstetricians and Gynecologists (ACOG). Polycystic Ovary Syndrome (PCOS). https://www.acog.org/womens-health/faqs/polycystic-ovary-syndrome-pcos
2. American Society for Reproductive Medicine (ASRM). Evidence-based Treatments for Couples with Unexplained Infertility: A Guideline. https://www.asrm.org/practice-guidance/practice-committee-documents/evidence-based-treatments-for-couples-with-unexplained-infertility-a-guideline-2020/
3. American College of Obstetricians and Gynecologists (ACOG). Treating Infertility. https://www.acog.org/womens-health/faqs/treating-infertility