I have severe pain in my stomach, vagina and rectum at the same time. i have had a hysterectomy and chronic constipation due to ms. what do i do?

Some comments: First, i trust you are taking a disease modifying medicine for ms, and if not, you should start Gilenya or tysabri (natalizumab). Secondly, for your constipation, definitely increase fiber intake dramatically. Also, see gastroenterologist for further help. Your pain might respond to a drug like lyrica, and your neurologist can help. Supplement vitamin d-3, and also, try to follow a low fat, low salt diet.