I don't think it's too much information, Shelley, but it's hard to know from here what's causing the pain. You can't get a "colonic" without a colon, but some folks here have had success with pouch irrigation. If your pain is really from retained stool, and you can't find a way to get your pouch to empty then perhaps irrigation would help. Just search the site for that word and you'll find the threads.
Is it possible that your stool is too thick? The pouch isn't very good at pushing hard poop through.