Blood in the urine the day after intercourse in women can exist in a number of possibilities. If the patient has not had sex prior to intercourse, the symptoms are considered to be minor bleeding from a hymen tear that spills out of the body with urination. If the patient has had sexual intercourse and has symptoms of blood in the urine the day after intercourse, it may be related to an injury to the urethra or the possible presence of a reproductive system infection.