on july 2 i woke up to horrifying pain which felt like a hemmorhoid. They did a sigmoidoscopy july 21 found out i had an anal polyp. Referred me out to a surgeon which come to find out i had a tear beside the polyp. So stitched both places up together. Extreme brutal pain followed. The doctor did NOT tell me the pain would be like that. I was told one week would be the extent. I had a foul smell
and insterstitital cystitis. For the interstitial cystitis, i had trigger point injections in the pelvis along with physical therapy exercises. Is it possible that i developed this awful tear from those injections? fissure developed 2 weeks after these.
I think the fissure is from the colitis. I hope they told you how to keep this latest surgical site clean. That will be very important. I have heard that anal surgery is very painful. Fissures heal all the time for normal people. For someone with colitis, it may be trickier.
Diet may play a role. I have Celiac disease myself, and for me, diet is the essential thing.
You should go to the colitis forums here and read how people with colitis stay as healthy and comfortable as possible.