What does blood look like in stool? i get black pieces when i wipe, but they seem kind of dry & will fall apart rather than smear. i take no vitamins.

? Irritable Bowel: It could be several thing including the fact that you are not drinking enough fluids. It also could be a condition called Irritable Bowel Syndrome in which case, stool consistency will change including being pellets like and black. Blood in the lower bowel will be red. However bleeding from stomach, it will be black in color. If it is black, then we need to check for blood in the lab or office.