 [ Symptoms ] for 2 3 years i have had blood in my stools [ Disease ] hello dear i understand your fear but you should tell them and go for a physician appointment some tests should be done it could be a lot of things like celiac disease cystic fibrosis lack of bile acids giardia infection could be piles bleeding for that v long time is not a something that can be figured out simply but should be properly investigated cbc stool analysis close full examination of you r body… my advice again go and tell your parents and start taking the rightful steps we are always here if you wanna ask any further questionstake care