To stop bleeding after sex, you need a diagnosis of the root cause.
See a healthcare provider right away if you experience significant blood loss.
Cervical Causes
The cervix is the passageway between the vagina and uterus.

Illustration by JR Bee for Verywell Health
Others may need annual screenings for HPV-related cancer as part of their care.
There is no obvious cause of symptoms in 50% of people who seek care for postcoital vaginal bleeding.
It’s likely that symptoms will clear up within six months for about 60% of this group.
Ardestani S, Dason ES, Sobel M.Postcoital bleeding.CMAJ.
2023 Sep 11;195(35):E1180.
2023 Oct 18;15(10):e47252.
doi:10.7759/cureus.47252
The National Health Service.Vaginal dryness.
2018;18(1):36. doi:10.1186/s12905-018-0528-x