It's been almost 12 years that I have blood in stool. When I checked with doctors they say I have piles.Total discomfort if motions are not clear. I take medication this never works. I m vegetarian. I drink lots of water, consume fruits, avoid diary products. Should I undergo colonoscopy? Some time I feel I may get cancer as the bleeding is from long. Please recommend what test should I do and I want to examine whole stool area. I stay at Surkhet