what is causing blood in urine?......1 teaspoon of coagulated blood exits at beginning of each urination.....see some dried blood leakage in underwear between urinations......slightly painful at end of urination.....no other pain in abdomen, kidneys, etc.....have been taking some statin, etc since june for 4 stints placement..... no abnormal body strain recently....except I pushed a heavy wheel barrow uphill Friday afternoon....bm s ok with no blood..... this started friday during sleep.....continued all day saturday......today is saturday. tried drinking lots of water during day....now drinking diet cranberry juice since 5:00. what is happening?