High ASCA IGG, everything else normal

I’m a male in my (very) early 30’s.
For a while (a few years) I’ve had chronic diarrhea. It concerned me only because it was annoying, and not because it was causing me any pain. I was eating a lot (above 3000 calories) in an attempt to gain mass for weightlifting, and I was also drinking coffee (several cups) everyday. About six months ago, I started to have a bit more discomfort (still no pain), and I had feelings of incomplete evacuation. I went to a gastro, and he…