I have crohns disease. My weight would bounce from over 220 when I was bloated and loaded up prednisone to the times I would get down to 135 when I was sick. I was in misory from 15 to 25. However, I have been in remission for the last 8 yrs and feel great! I did it from changing my diet, and eliminating the stress I had in my life at that time. (I know dr's say diet isn't important and stress doesn't have much to do with it.)
Since you are a body builder. I assume you are eating 6 to 8 balanced meals a day. This is great. However, if you are taking any oral steroid, caffeine, ephedra, etc...These can cause flare ups.
Good luck