The first week I felt nausea , belching , and gas. The second and third week is dull and aching pain in the middle of my stomach sometimes hard to breath , feels like someone sitting on me. Last night I had diarrhea but it smelled sweet. Which I thought was odd. Took Pepto Bismul which helped for a little while but then it comes back again and again. I can t keep taking Pepto. I have tried Tums but doesn t work. I am not allegric to any food or drugs, not I am aware of. I am taken Zantac for the acidy feeling in my stomach I get when i eat pepperoni or drink to much tea or soda, and Mexican food. I don t have ulcers. I do take Advil for my body pains. Please help.