Hi,I have had a lot of bad pain since Feb. I thought it was another kidney stone but had a Catscan and it showed up 4 but they are very small ones.So I went to my doctor yesterday and he wants to rule out anything to do with my IBS ect.I take Zelnorm and now that new warning has come out and that has me concerned.Just wondering if anyone here has had a colonoscopy done. I have heard it is no big deal and you don't even know what is going on.Thanks for your help. Polly