Unusual causes of lower right abdominal pain? colonoscopy, ct scans, ultrasounds, blood and urine tests have all found no cause.

Don't give up !: Not all bad things that occur in the abdomen are associated with high fever (example: acute intestinal ischemia) nor does the pain have to be severe (example: cancer is often painless). Remember, the abdomen includes many organ systems (gi tract, liver/biliary/pancreas, renal/urologic, gynecologic, vascular, etc.)--any one of which can cause catastrophic illness without severe discomfort or fever.

Abd pain: Imaging tests don't show many types of problems. Considerations can be celiac disease or other malabsorption, gall bladder disease, endometriosis or low grade infections, even chronic appendicitis.