Hello I had gone through your question and I can understand your concern Looking at your history this could be any of following gastritis or stomach ulcer due to stomach hyperacidity Indigestion aerophagia liver disease or gall bladder stone in my opinion you should consult a gastroenterologist for examination and a battery of tests like blood for hemoglobin CBC Liver function test or an upper GI endoscopy PPI group of drugs like omeprazole with antacids will definitely help you; about which your doctor knows Avoid fatty fried spicy and junk food or carbonated drinks have good amount of fresh fruits and plenty of fluids hope this helps you wishing you good health