Hi. Fresh blood after passing stool may be due to hemorrhoids/piles, while stool mixed with blood would be due to disease in the large bowel. If you have blackish stool associated, it means that there could be some disease process in the proximal large bowel or small intestine
. I guess this can be arrived at only after a detailed evaluation by a gastroenterologist with a colonoscopy
. So please visit a Gastroenterologist. Thank you.