I came on this board to check out what other people had to say about flexible sigmoidoscopies before I had mine done. Everyone scared me to death! I had it done this morning and it was a piece of cake! Seriously! Yes you feel gassy but if you've ever had diarrhea or constipation (which is probably what brought you to have this done anyway) it's not a new feeling at all.Anyway I just had to put my two cents out there, so that someone else may read this and maybe not get so worked up.