HI. Thanks for your query and proper history, read and understood it. There are few reasons for your classical history of pain in the upper abdomen which radiated to the back : -Gastric ulcer on the posterior wall of the stomach; -Pancreatitis. I would advise you the following: First of all get two investigations done- MRI of the abdomen and Upper GI endoscopy. If you have stomach ulcer: Zantac 12 hourly. Pepcid every 3 to 4 hours when on empty stomach. Add Domperidone or such motility regulators. Soft bland diet. No aerated colas / soda/ drinks. Early dinner. No late nights. Treatment for anxiety (as prescribed / needs a prescription by your Doctor) Lying in a reclining position Walk around after dinner. Think of the factors which increased the present problem, GERD, anxiety and try to avoid. If no relief, get Upper GI endoscopy done and get prescription for added Medicines. EKG for the heart n a safer side to rule out cardiac problems. This helps all my patients and should help you hopefully. If there is pancreatitis , you need an opinion of a Gastroenterologist , ERCP for diagnosis and for therapy to put in a stent , and follow the advise ...