I can relate to some of what you are experiencing. I had a permanent Iliostomy done on 9/4/2012 abd had two abcesses and now have seepage from my anus (they didn't remove it...yet!) I was also told by a surgeon (without any evidence) that I have Crohn's! Not true according to my GI and the surgeon who performed the operation.
Apparently I have a fistula in my anus stump, an internal hemmie causing some bleeding and some mild colitis. I guess just keeping my anus isn't working out for me. It seem to be worst when I power walk!
I never wanted the j-pouch in the first place as I had so much pain with UC. I actually never wanted to use my anus again! I'm ok with the ostomy bag.
You may be having simular complications in the anus pouch area. I doubt if a j-pouch will fix anything. It may be worst.
Diagnosed with UC, July 2010
proctocolectomy with end ileostomy, Sept 2012
Bye Bye UC!