Fresh blood during intercourse may be related to excessive force, gynecological diseases and the onset of menstruation. 1. Excessive force: If you are not fully prepared and exert too much force during coitus, it is very likely to lead to vulvar and vaginal lacerations and bleeding. 2. Gynecological diseases: If a woman has cervicitis or cervical polyps, excessive stimulation during intercourse may also cause bleeding, and it is recommended to go to the hospital for cervical examination. 3. Menstruation: two or three days before menstruation, some women will have a small amount of coffee-colored secretions, which can also cause bleeding when intercourse stimulates the uterus. There are other reasons for fresh blood during intercourse, so it is recommended to go to the hospital for a formal examination to clarify the cause.