The rupture of the hymen on first intercourse is mainly due to the fragility of the hymen and the small hole in the middle, which can easily break during the first intercourse. If the first intercourse is more intense, there will be tearing pain with vaginal bleeding. Sexual intercourse should be prohibited until the hymen is completely healed to prevent infection. The female hymen is located at the vaginal opening and is a perforated or sieve-shaped membrane that protects the vagina from external pathogens. Most women have a ruptured hymen after sex, but some women may experience a ruptured hymen when they participate in strenuous sports such as high jumping, horseback riding, martial arts, and bicycling. When the hymen ruptures, it can cause the capillaries on the hymen to rupture, resulting in a small amount of bleeding, which is mostly fresh and relatively small. However, if the hymen is thicker, there may be a lot of bleeding, which should be treated at the hospital in a timely manner. If you are not planning to have children in the near future, you should take care to use safe and reliable contraceptive methods, such as condoms, when having sex to avoid unwanted pregnancy.