"Diagnosing celiac disease can be difficult because some of its symptoms are similar to those of other diseases, including irritable bowel syndrome, Crohn's disease, ulcerative colitis, diverticulosis, intestinal infections, chronic fatigue syndrome, and depression. Recently, researchers discovered that people with celiac disease have higher than normal levels of certain antibodies in their blood. Antibodies are produced by the immune system in response to substances that the body perceives to be threatening.
To diagnose celiac disease, physicians test blood to measure levels of antibodies to gluten. These antibodies are antigliadin, anti-endomysium, and antireticulin. "
You have my symptoms. Could be Celiac disease. Educate your doctor, and if he's not receptive, then switch to vegetables, fruit, rice, certainly no bread of any kind. Because it sounds like doctors haven't really helped you, which is not unusual for this disease.