What are the causes of bleeding after sexual intercourse between a couple?

1. Mucosal injury: Excessive friction during sexual intercourse may damage the mucous membrane, leading to bleeding. 2. Infection and inflammation: Certain sexually transmitted infections (STIs) or gynecological inflammations may cause post-coital bleeding. 3. Hormonal fluctuations: Significant changes in hormone levels, especially during certain phases of the menstrual cycle, may increase the risk of bleeding. 4. Uterine or cervical conditions: Conditions such as cervical polyps, cervical ectropion, or uterine fibroids can all lead to bleeding after intercourse.