If the diarrhea
and the cramps are related to your menstrual periods, prostaglandin
release may be blamed. Persistent pain calls for medical attention and investigation. You should see a specialist and get an abdominal as well as trans-vaginal ultrasound
to rule out organ pathology ans also note the extent of endometriosis
. You may need to change the pill or withdraw pills until your pain subsides. Please see a gynecologist for further appraisal of the situation. Wish you good health.