If there is pain in the vagina, it may be due to the following reasons: 1. Local inflammation of the vaginal mucosa leads to local congestion and edema, so there is pain and it is often accompanied by increased vaginal discharge, odor of vaginal discharge or local itching and burning sensation. 2. It may be due to endometriosis lesions that are ectopic in the vagina, so it causes pain and this pain is aggravated during menstruation. The pain may be aggravated during menstruation and may be more severe if you have sex and come into contact with the ectopic lesion. 3. The pain may be caused by a break in the vaginal mucosa during the insertion of pills or during sex. If there is pain in the vagina, it is best to go to the hospital for diagnosis and treatment.