The most common symptom of a colon tear is bleeding, according to WebMD. Blood may be found in the stool or coming out of the anus.
Other than a bloody stool, symptoms of an anal tear include discoloration of toilet water and bloody toilet paper after a bowel movement, according to WebMD. Stomach pain or pain while making a bowel movement is also common. Bleeding from the anus and blood in the stool are symptoms of many different disorders and injuries aside from a colonic tear. A physician should be contacted for an accurate diagnosis of the source of symptoms.