I have GERD and have gone through many endoscopies and a colonoscopy. The last time I had a colonoscopy was in 2013 because of pain in the mid/lower left quadrant of my abdomen. My GI Doctor thought I had celiac disease because of my yellow, loose stools but that came back negative. He then diagnosed me with IBS but I feel that he may have been wrong. I am now, more than ever, noticing a fishy odor in my stools accompanied with a heightened sense of urgency to use the restroom. Along with yellow, loose stools, I have a lot of bile/mucus when I wipe. I am frustrated because I just get told that I have IBS but I feel that is something much worse.