PCOS and not getting your period: what to know

A person with PCOS may ovulate less often, or not ovulate in some cycles. Without ovulation, the usual hormone pattern that prepares and sheds the womb lining can change, so bleeding may come late, be unpredictable, or not happen. PCOS commonly presents with irregular or absent periods, but a missed period does not by itself confirm PCOS. Pregnancy, changes in weight, intense exercise, stress, thyroid problems, raised prolactin, and some medicines can also affect bleeding.

Going for a long time without a period can allow the womb lining to build up in some people. A clinician may ask about your cycle pattern, acne, increased facial or body hair, weight changes, medicines, and pregnancy possibility. Assessment may include a pregnancy test, blood tests, and sometimes an ultrasound; the right combination depends on your history.

If pregnancy is possible, take a home pregnancy test according to its instructions and arrange medical advice if the result is positive, unclear, or your period remains absent. Book a primary-care or gynaecology appointment to review the missed bleeding rather than assuming PCOS is the only explanation. Keep a record of bleeding dates, spotting, pain, new symptoms, medicines, and any test results.

Treatment depends on whether you want pregnancy now and on your symptoms. A clinician may discuss ways to protect the womb lining, regulate bleeding, manage androgen-related symptoms, or support ovulation when trying to conceive. The combined pill is one possible option for some people, but it is not suitable for everyone and needs an individual safety review.

Seek urgent medical help for severe or one-sided lower abdominal pain, fainting, marked dizziness, shoulder-tip pain, or heavy bleeding, especially if pregnancy is possible. These symptoms can need prompt assessment. Arrange a routine appointment for repeated missed periods, new persistent headaches or vision changes, milky nipple discharge unrelated to breastfeeding, or rapidly worsening unwanted hair growth or acne.

You could ask: Could pregnancy or another hormone condition explain my missed periods? Do I need tests to assess ovulation or the womb lining? What bleeding pattern should I expect with the treatment we choose? If I want to become pregnant, which options are appropriate and when should we review the plan?