My 13 year old son has been sick since Feb 21. Steady pain in the lower right abdomen plus sharp pains every 1-3 minutes. He's been tested for Celiac disease, colitis, ulcers, food allergies, IBS, chrone's, and has had 2 ct scans, xrays, endoscopy, and a colonoscopy. Every test has come back negative or normal. Low white blood count on every blood draw. One of the ct scans suggested mesenteric lymphadenitis, but we were told that should clear up in a couple of weeks.