if the blood was bright red then it is likely from a hemorrhoid or fissure. darker older-looking blood can be from higher up in the intestinal tract and black tarry blood is usually from the stomach. don't panic. there is a good chance that this is an innocent finding but you will need to be examined to determine the exact source of the blood.
i am only 19 and this morning i saw blood in my stool. what could be the cause? i don't have anal sex i feel no pain.