I think you already know your diagnosis, so further testing won’t really solve a problem. Hopefully this will resolve on its own. You probably developed more adhesions during your pouch pexy, and most likely that’s caused a temporary narrowing. You haven’t described any reason to expect a stricture in your small bowel, so that’s quite unlikely if you don’t have Crohn’s. This is a very aggravating problem to have, and the best thing, if you can manage it, is patience. These usually clear up with in a couple of days. Good luck!