There are many reasons for bleeding. Bleeding that occurs when you go to the bathroom is usually considered to be urethral bleeding. Vaginal bleeding or bleeding from the stool. For urethral bleeding, consider whether it is caused by inflammation of the urethra, an abscess. Vaginal bleeding, consider whether the woman is menstruating, is menstrual blood, or the bleeding of pre-menstrual abortion, and uterine fibroids or uterine shedding of inflammation caused by bleeding, and then consider whether it is caused by bleeding from the stool. If the blood in the stool is fresh, the lower gastrointestinal tract is considered to be bleeding from the rectum or hemorrhoids. If the blood is dark, consider whether it is bleeding caused by the upper gastrointestinal tract, gastric ulcers or tumors.