IBS or bowel cancer?

[KayeS]

Well I've literally just gotten back from a colonoscopy for very similar symptoms to you and all was clear and I'm 31, so I reckon at 18 you're pretty safe, but there's nothing to worry about in regards to having a colonoscopy. I didn't have any sedation and it was fine.

[Peterthegreatworrier]

Thanks so much for that, KayeS
I think this should help put my mind a little more at ease for the next couple of days. In regard to medical procedures, I have been very fearful of possible complications since I read about a girl in America who got brain dead after surgery for sleep apnea (although, while the media painted it out to be a simple tonsillectomy, the procedure was in fact far more complicated).

Another point I'd like to mention though, is that I yesterday did manage to pass a tiny amount of stool, but it wasn't hard. Is this still consistent with IBS or your symptoms?