There are two main factors that may cause bleeding after each intercourse: one is the excessive force that stimulates the cervix during intercourse, including the rupture of blood vessels in the vaginal wall, which may cause a small amount of bleeding, which usually ends within 3-7 days. Another factor is cervical erosion, when there is intercourse stimulation of the erosion surface can cause there to be bleeding, because there is blood after each intercourse, the chances of this may be greatly increased. It is recommended to go to the hospital for colposcopy and TCT, including HPV pre-cancer screening, because when there is contact bleeding, there is a chance of HPV infection, so a series of pre-cancer screenings should be performed to rule out any abnormalities. Depending on the situation, medication is needed to avoid prolonged bleeding that can affect your health.