Hello. I am a 20 year old female. Just this past weekend I went to a Women s Retreat. During the last day, I started feeling nauseous and my stomach hurt. Also on both sides of my rib cage (under my breasts) I feel pressure, every here and there. A few years ago, I went on a gluten free diet. All my gas, and bloating went away. Over the weekend, I ate a lot of gluten. I have not thrown up, but I have been close. I have had such an upset and crampy stomach it is driving me nuts.