My mother is 80, today when she went pee she had blood on her tissue when she wiped. What would cause this? She said she had no pain, no urinary infection, did no lifting, nothing that cause this. She is 5 3 weighs about 185 lbs and is being treated for high cholosterol she takes lopid 600 mg, high blood pressure verapamil 240 ml, synthroid 75 mg, and a baby asprin every am.