I do seem to have all the symptoms of colitis, and my thyroid problem is auto immune, so I guess there may be a link. My GP is a bit rubbish, I've been there once or twice with blood in my stool and they always want to fob it off as piles, which I don't think it is as I just don't match that profile, I'm extremely regular and never strain. Also, when I get these flare ups I feel inflamed and sore for a couple of days. They don't happen often and are short lived, which is why I don't want a colonoscopy as I don't think it's a very bad case at all. Well, that and the fact they sound horrible!