I've been having. Every couple of weeks I get debilitating stomach pain of the upper side of my belly (under my right breast). It always happens at night and usually leads to vomiting. The pain wraps around my abdomen from mid-line on my belly to my spine and I can't lay on my right side because it feels like it's inflamed and any pressure on my stomach makes the feeling like I'm going to vomit so, so much worse. I eat different things, and at different times, but my boyfriend thinks it may be the level of oil/fats in the food I eat for dinner. Sleeping helps, but it usually hurts so much I can't sleep.