Pain in the vagina can be caused by several possibilities: 1. Inflammatory diseases of the reproductive tract can cause pain in the vagina, accompanied by abnormal discharge. 2. Damage to the muscles and nerves during childbirth can also cause pain in the vagina, which is mostly radioactive and intermittent. 3. Trauma and contusion of the vaginal tissues can cause pain in the vagina. In this case, there is a clear history of trauma, which may be accompanied by irregular vaginal bleeding. 4. Pain may also occur when the vaginal wall is damaged due to rough intercourse. 5. Pain may occur when a woman has a tumor of the reproductive tract, such as cervical cancer, cancer of the vaginal wall or cancer of the uterine body, due to the enlargement of the tumor tissue and the erosion of the local tissue.