Bleeding Between Periods While Taking Birth Control Pills

The bleeding may settle as the body adjusts, but ongoing, heavy, painful, or unexpected bleeding deserves assessment rather than an automatic assumption that the pill is responsible.

Hormonal contraception changes the lining of the uterus. During adjustment, that lining may shed irregularly and appear as pink, red, or brown spotting between expected bleeds.

Late or missed pills, vomiting, diarrhoea, and some medicines or herbal products can affect pill use or hormone exposure. Bleeding between periods can also have causes unrelated to contraception, including infection, cervical changes, polyps, or fibroids.

Keep taking the pill according to its instructions unless a clinician tells you to stop. Check the pack guidance for any late or missed dose, because the advice varies by pill type and timing.

Record when bleeding starts, how much there is, whether it follows sex, and any pelvic pain or unusual discharge. If pregnancy is possible, use a home test at the time recommended in its instructions and seek advice about additional contraception.

Arrange a clinical review if bleeding keeps returning, begins after previously stable pill use, occurs after sex, or comes with pelvic pain, pain during sex, unusual discharge, or possible exposure to a sexually transmitted infection.

Seek urgent care for very heavy bleeding, fainting, marked dizziness, severe abdominal or pelvic pain, shoulder-tip pain, or bleeding with a positive pregnancy test. These symptoms require prompt assessment regardless of contraceptive use.

Ask whether your pill schedule, other medicines, pregnancy testing, infection testing, or a pelvic examination could clarify the cause. You can also discuss whether staying with the current pill or changing contraception fits your symptoms and priorities.