Re: Worried about colon cancer
It sounds more like IBS to me, if you were passing blood your Dr would have been more concerned. IBS can cause frequent bowel movements and also thin or ribbon=like stools along with or without pain in the rectum or stomach.
Your Dr is wise to sugest a Colonoscopy, I have had two and was diagnosed with Diverticulitis and IBS.
Your problem does not sound like C.C, but I'm not a Dr and my advice is to have that Colonoscopy for peace of mind.
Hope this helps and all the best,