Bleeding after sex in the second trimester

Pregnancy increases blood flow to the cervix, which can make it bleed after contact, but bleeding can also come from infection, the placenta, or another pregnancy-related problem. The amount and accompanying symptoms determine how quickly you need to be seen.

A pregnancy-related change on the surface of the cervix can make delicate cells bleed with friction. Vaginal irritation, a small tear, a cervical polyp, or cervical infection may also cause contact bleeding. Chlamydia can involve the cervix and may have few other symptoms.

Clinicians also need to consider causes not produced by sex, including bleeding related to the placenta or the pregnancy itself. Sex may simply make the timing noticeable. A maternity assessment is the appropriate way to locate the source; spotting cannot be classified safely by colour alone.

Stop intercourse and use a pad, not a tampon, to observe the blood. Note when it began, whether it is only on wiping or reaching the pad, and whether it is easing. Be ready to report pain, tightening, fluid leakage, dizziness, fever, unusual discharge, and any change in your baby's usual movement pattern if you already notice movements.

Tell the maternity team your stage of pregnancy, placental information you have been given, blood group if known, and any earlier bleeding. Follow their advice about where and when to attend. Do not insert home treatments or assume that light bleeding needs no discussion.

Go to emergency maternity care now if bleeding is heavy, increasing, or accompanied by strong abdominal pain, repeated tightening, fluid loss, faintness, marked weakness, shoulder pain, or feeling seriously unwell. Call emergency services if you cannot travel safely.

Urgent assessment is also needed for reduced or absent movements once you have an established movement pattern. Do not drive yourself if you feel dizzy or faint. Even without these warning signs, report second-trimester bleeding to your maternity team on the same day.

Ask whether you need an examination or scan, whether the placenta's position is relevant, whether infection testing is needed, and when intercourse can safely resume. Clarify which changes in bleeding, pain, fluid, or movement should bring you straight back for care.