Sever stomach pain & cramping sharp pain especially on the right side a history of this plus a history of endometriosis.

Abdominal pain: Severe pain of the abdomen requires evaluation as soon as possible. Serious conditions such as appendicitis, colitis, gallstone or gallbladder infection, and abdominal abscess all require medical treatment. If you have endometriosis and it is relapsing then you could develop abdominal pain, and you would need to see your gyn. The best course is to get checked out now.