My Daughter, Age 23, Has Been Suffering From Acute Intense

My daughter, age 23, has been suffering from acute intense stomach pains. They have been accompanied by diarrhea, vaginal bleeding (even when not on cycle), intense nausea and severe weight loss. Since December 2014, she has lost over 60 lbs and is terribly amaciated and extremely skinny. She has been admitted to emergency no less than a dozen times since December 2014, more alarming, 3 times in the past 7 days. She has had nearly every test including blood, urine, x-rays, MRI, ultrasound, gastroscopy and colonoscopy; all which have come back negative. She is yet to have a pelvic ultrasound.