Hi, I'm a 20-y-o male. I've had abdominal pains for a few years now, worse in the last year or 2, and melena (blood in the stool). When I say melena, I mean, my stool has nearly always got a dark colour and a lighter colour. Today, I felt like I had diarrhoea, and when I went, there was some brown liquid (not much), normal stool, and then what looked like a stool but with a white mucus-like substance on it. I've already had a colonoscopy, and I'm waiting on the biopsy results, but what do you guys think? I wasn't too worried about it until today's "stool episode", now I'm afraid it may be cancer....