Side effects of irregular periods on the body

Cycles may come earlier or later, last longer, or be absent for a time. When ovulation does not happen regularly, pregnancy can be harder to predict and the womb lining may build up before a heavier bleed. Heavy or prolonged bleeding can contribute to iron deficiency, which may cause tiredness, dizziness, headaches, or breathlessness.

Irregular periods are a presentation of conditions such as anovulation, polycystic ovary syndrome, perimenopause, or premature ovarian insufficiency. The pattern alone cannot identify the cause. A clinician may consider pregnancy, medicines, weight change, stress, thyroid symptoms, and other health details.

Record bleeding dates, flow, pain, medicines, and related symptoms. Arrange an assessment if the pattern is new, persistent, or affecting daily life. Testing may include a pregnancy test, blood tests, or an examination guided by your history. Treatment could focus on the cause, reduce bleeding, protect the womb lining, or support pregnancy planning; options can include the combined pill or metformin for PCOS when suitable.

Seek urgent medical advice for bleeding that soaks pads rapidly, severe pelvic pain, faintness, marked weakness, or breathlessness. If pregnancy is possible, pain with bleeding needs prompt assessment because pregnancy-related problems require specific care.

Ask what your bleeding pattern suggests, whether iron or hormone testing is needed, how to protect the womb lining, and which option fits your contraception or pregnancy plans.