I ve have ongoing stabbing pain in my stomach for 2 1/2 weeks, which started out above the belly button for about 10 days, along with barely being able to eat anything without feeling extremely full. After the 10 days of barely eating, I felt ok for about 2-3 days, and now the pain has moved to below the belly button, along with lots of gas, some bouts of diarrhea, and feelings of acid. I ve been taking Pepcid AC for almost this entire time. All along, I ve had mild back pain, mostly lower or middle. I ve read a lot about what it could be, but it seems like it could be various things. During this whole time, I feel the best when I have no food in my stomach, like right when I wake up in the morning. Any advice would be great.