Responsa על נדה 34:5

2 - A woman has an abscess in her urinal canal which cannot be discerned. As a result, she experiences during urination, extreme pain in her thighs, which is followed by a discharge of blood. Even after urination, drops of blood are found in the vagina. She claims that she can discern the fact that the blood was discharged from the urinal canal by examining herself with cotton and testing for blood, and not from the Fallopian tubes. Does this blood render her ritually unclean?