Your digestive system sounds a lot like mine! I can't eat meat without getting diarrhea. It's the same thing with milk products for me (I'm lactose intolerant, too) Yeah, the greasy food thing is bad for me too...I just wanted to tell you I can really relate. I'm in the same bind as you are, without the severe pain, though.

I hope you can figure this thing all out before it gets too painful for you. Take care and hang in there, girl.