I have had pain that begins right below my diaphragm on the left side and radiates all the way to my back. This pain is excruciating. I at first thought it was gallstones but I thought that would hurt on my right side so then I thought I was just having an upset stomach. This pain does not go away and seems to get worse after I eat. What can it be. Can it really be gallstones. I am thinking more in the terms of duodenitis. In the past I was told I had a hiatal hernia but have not been checked for that in years. I at one time had H-pylori but was treated for that. This pain is becoming so bad i cannot eat or drink anything. What can it be. I need help. Please.