I wrote a long blog post about this (see my signature for link). People with FAP rarely get pouchitis. I was told all year long that my issues MUST have been pouchitis and the surgeon that kept scoping me said I had NO pouchitis. So I finally had Shen scope me at Cleveland Clinic and he said not only did I not have pouchitis I NEVER had it. What I did and do have is C.diff. From being on non stop rotation of Omniceff and Cipro I had C.diff.
I had no clue that antibiotics would make my life worse. I had no idea what C.diff even was. So if you ever have a lot of symptoms of gas, runny stool, pain (my pouch felt like a bowling ball was inside me) and other pouchitis/blockage symptoms. Make sure doctors test for C.diff. Sad a whole year went by and I just got worse to the point I almost booked surgery to remove my pouch.