alfers said...
Are you positive you don't have C-Diff? That can cause consistent intestinal problems. Apparently once you cure it you're still much more likely than the general population to get it again. The only fix for that is antibiotics (ironically). You might want to look it up and just see if those symptoms sound like yours.
I always test negative for CDiff. The Flagyl should cure it up if that's what it is. I always test negative for everything.