Thank you all for your replies. I had to go to the town today where my colonoscopy ws performed. (An hour away & it's a small hospital, we don't have a hospital in my county). Anyway, I stopped by the Dr.'s office hoping he might be available. He wasn't but his nurse was. She said he was able to get part way up my colon but couldn't get around the loop at the top because it was so stretched. She explained I had severe diverticulosis. That it's a common condition but the advancement of mine is usually only seen in the elderly, typically around 80 yrs old. There were lots of inflammed protruding pockets. He just wants to be able to see my whole colon to be sure there are no other problems. So, that's the better explination I received. And I spelled colonoscopy wrong in an earlier paragraph. I said colostomy and didn't mean to. No, he doesn't want o do that. As far as we know there's nothing serious wrong with me. Just can't complete the procedure and I couldn't understand why. As for the pain, I've always had it and as far as I know there's nothing that can be done for it. I've just learned to live with it. It comes and goes to a certain extent.