Hi, Last Saturday I noticed blood in my urine . I went to the hospital where it was diagnosed as a kidney infection. I started antibiotics (Cipro) and will continue them for 10 days. The bleeding is no longer present as of Monday. Looking back, I m pretty sure that I ve had the infection for a considerable period of time. I ve had pain in my lower back and the flank region. I thought that the pain was related to a herniated disk and lower back problems that I ve had for over 25 years. What are the chances that the flank and back pain are caused by kidney damage? I m scheduled to see my urologist after the 10 day period of Cipro is over. Right now I m quite concerned about the possibility of having damaged kidneys. Any thoughts would be greatly appreciated.