I have had stomach pain for about 2 weeks. I thought it was my gastritis acting up so I cut way back on coffee, to half a cup a day, quit eating chocolate and no alcohol. It wakes me up in the middle of the night and also makes my back hurt. It doesn t seem to be localized to the right side, dull ache, hurts when I eat and when my stomache is empty. I am thin, and reasonably fit and I eat really healthy, no junk food or fast foods. Any ideas?