blood in urine

On March 25 I discovered blood and a few clots in my urine. I did not have a fever nor any pain in my lower back which would indicate a kidney infection or other problem. It cleared up 5-6 days later without treatment but I made an appointment with Dr. Hackett, a urologist to have it checked out. A blood test showed a testosterone level of 39, with a normal range between roughly 250-850. I subsequent test showed a normal level of 389 so the initial test was ruled an anomaly. A CT scan of my kidneys was unremarkable and a cystoscopy or my bladder showed nothing abnormal. The blood was attributed to a possible small ulcer in one of my kidneys or bladder caused by my LV condition. It is unknown if this will recur.