i was having alot of pain around my left back thought it may be kidneys, urine test showed blood so they put me on an antibiotic. but lab results came back negative for infection retested 3x and still blood but no infection sent me to an urologist by the time i got in 2 mo past but same thing.and although other test i had for kidney stones were negative he wants me to have a ct scan and a cystocopy or what ever thats called i am real scared but i just turned 40 a few weeks ago and every thing on the internet says it is usualy in ages 60 plus any imput would be appreciated.