Here's a story (a true one) to reenforce that you made a good call to push the issue. At about 47, my friend who had an "experience" with colorectal cancer (see post 236 above) mentioned to his internist that he believed he had blood in his stool. Internist sort of made fun of him, which I think eroded my friend's confidence to pursue the matter further, and told him that he needed to address the colonoscopy issue at 50. Long story short, my friend ended up at 50 when he he had his first colonoscopy done with rectal cancer that has been HELL for him. Rounds of chemo and radiation, one surgery with a temporary osteotomy installed, a second surgery to reverse the osteotomy, and long-term less-than-ideal health concerns that will be with him the remainder of his life. (He sh-ts himself fairly frequently at 54.) He told me that in his current condition that if he feels a gas bubble, he'd better get to the bathroom because he can NEVER trust a fart. Guys, that sounds like a tough existence to me. I know, I know - he should have pursued the issue when he was dissatisfied with the internist's response, but he's a lamb and not a lion. He listened to that FJO's advice and let it impede him from "going over his internist's head" to get a second opinion. Bad on him, but his goal is to see his teenage girls walk down the aisle. None of us would EVER trade places with this dude, a prince of a man. Bottom line is get a colonoscopy and get it in your mid-40's.