I have upper stomach and back pain at the same time. It s a sharp and heavy pain . When I m lying down it hurts more. My CT scan are almost normal except small duodenal diverticulum , fibroids of the uterus. My past endoscopy revealed I had GERD and gastritis(2013) . Today and 3 days ago I m suffering an on and off pain. ER doctor changed my Ranetidin to Protonix. I stopped Prevacid because it increased my liver function test to triple digit. What is the best thing to eat or do to prevent having too much pain? Also , I m taking Tylenol with codeine when I feel severe pain. Could this will contribute more pain?