Some cramping with the menstrual period is normal, but it is not normal to have pain that interferes with a woman's normal activities. Prostaglandins are compounds in menstrual blood that cause the uterus to contract, and cause cramping. Common medicines used to treat dysmenorrhea, such as aspirin, ibuprofen, or naproxen sodium help by interfering with the production of prostaglandin. Birth control pills may also decrease cramping with periods. Other conditions causing pain with periods are abnormal, and may require treatment.
Submucous myomas are fibroid tumors on the inside of the uterus.
They can act as a foreign body, cause the uterus to contract to try to expel them. They can often be removed without major surgery using an instrument called a resectoscope. Adenomyosis is common cause of severe menstrual pain, and is often confused with fibroids. An adhesion is where two organs stick together. Pelvic pain can occur when adhesions are stretched.