When should you see a doctor about bleeding after sex?

Bleeding after sex, also called postcoital bleeding, may come from irritation, dryness, a small tear, inflammation, or an infection. Genitourinary syndrome of menopause can cause fragile, dry vaginal tissue that bleeds with friction. Cervical polyps can also present with bleeding after sex. Chlamydia and other infections may cause bleeding alongside unusual discharge, pelvic discomfort, or pain when passing urine.

Less commonly, changes in the cervix or vagina can present with bleeding after sex. Cervical dysplasia and cervical cancer can both present with abnormal bleeding, while vaginal cancer can present with bleeding or a vaginal lump. Bleeding alone cannot identify the cause, and many causes are treatable. A clinician may need to examine the vagina and cervix and decide whether testing is appropriate.

Arrange a routine appointment if the bleeding happens again, does not settle, or has no clear explanation. Make a note of when it started, how much blood you noticed, whether it followed penetration or another sexual activity, and whether you have pain, discharge, fever, or bleeding at other times. Tell the clinician if you may be pregnant, have gone through menopause, take medicines that affect bleeding, or are due for cervical screening.

Until you are assessed, pause penetrative sex if it causes bleeding or pain. Do not douche or put products inside the vagina. If an infection is possible, avoid sex or use barriers until you and any relevant partners have received medical advice and treatment.

Seek urgent medical help if bleeding is heavy or difficult to control, you feel faint or unusually weak, or you have severe or worsening pelvic or abdominal pain. Get prompt assessment for bleeding with fever, vomiting, foul-smelling discharge, or possible pregnancy, especially when pain is one-sided or sudden. These features can need same-day evaluation.

Any bleeding after menopause should be checked, even if it happens once or appears light. It does not automatically indicate cancer, but it should not be self-diagnosed.

Useful questions include: What could be causing the bleeding? Do I need an examination or infection testing? Could dryness, a polyp, or a cervical change explain it? When should I return if it happens again? If cervical tissue needs closer assessment, ask what the proposed test involves; a cone biopsy is one procedure used in selected situations to remove and examine a cone-shaped piece of cervical tissue.