Light red blood in loose stool? should i worry if it goes away when stool is not loose anymore?

See MD: Blood in stool, not coating it, or on stool, is a symptom that demands evaluation. Blood on stool can come from low down in rectum or anus-source may be hemorrhoids, or more serious. Blood in stool comes from higher up-may be due to infection, inflammatory bowel disease, poor blood flow to bowel, cancer, polyps, fragile blood vessel that burst, diverticular disease. C your doc.