Thanks for the info. Was your fistula tender? My swollen spot is a bit tender but not not painful. I noticed it on Sunday after a BM. On Saturday I threw my back out so had to sit/strain differently to empty pouch. Not certain if straining could cause swollen spot. I had an MRI last June and a Camera endoscopy (I swallowed a camera/pill) after concerns with pouch. Last March I had a perforation in pouch which required emergency surgery.
At this point I am trying to rule out anal cancer. After all of these health issues I tend to overreact a bit to medical concerns.