Hi there..it looks like you are suffering from gastritis and probably lactose intolerance also. Since it is in a severe condition you will have to start on proton pump inhibitors which will help reduce your gastric secretion. This in turn will also help reduce strong hunger pains. Also for now completely avoid spicy foods, oily foods, dairy products like milk butter ghee curd. Have 4-5 short meals per day instead or 3 big meals per day. Do not starve for a long duration. And consult a gastroenterologist soon, so that they can start you on required medication I