After I recovered from pneumonia, I was diagnosed with IBS (possibly related to antibiotics) about 6 months ago. I visited a gastro-specialist who prescribed some medicines that had some affect.

However, the symptoms didn't really disappear and I went to another doctor. Symptoms fluctuate- diarreah or rather just loose stools- sometimes constipation. Irritation by acidy foods like citric acid in tomato sauce. Some epigastric pain that has most disappeared and some indigestion. Nowadays, I sometimes had floating (but formed) stools. I do not see any oil in stools, but sometimes they are difficult to wipe. (messy) I now go to the bathroom between 1-3 times a day- and fluctuation of different stool types. In general, my stools are a bit darker than usual, but not consistently. They are sometimes darker brown, but never black. Usually they are medium brown though. I go through bouts of undigested vegetable matter. The floating stools (happened about 4-6 times total) worry me most. They often have tiny gas bubbles in them, but are formed. I often have gas and stomach rumbling. Sometimes I have lower stomach pain, not localized. I am worried I have been misdiagnosed.

My doctor ordered colonoscopy, upper-endoscopy, and stool tests ( occult blood, c dif, and parasites) All were 100% OK. My doctor said floating stools and epigastric pain sometimes are nothing to worry about as I am young (32) and tests seemed okay. I sometimes am a bit fatigued, but I am also out of shape and working and studying a lot. Is it really IBS or should I be worried about gallstones, pancreaitis, celiac, or something else?