The most common causes of pain in this area in women are the following: 1. dysmenorrhea or endometriosis, which is very related to menstruation and usually occurs during the first one or two days of menstruation and can be relieved by applying heat. 2. it may be a lesion of the vagina or cervix, such as vaginitis, cervical erosion, or even cervical cancer. 3. it may be pelvic inflammatory disease. The pain in the lower part of the abdomen is accompanied by bilateral pain in the lower abdomen. 4. It may be a bladder disease, such as urinary tract infection, cystitis, which is accompanied by frequent, urgent and painful urination, in addition to pain in the above mentioned places.