hi,
When I was 41 years old, I noticed blood in my urine. I went to the doctor and they put me on 2 rounds of antibiotics. since I was still seeing blood, they sent me to a uroligist who ordered test. the test showed I had stage 4 kidney cancer. I never exprienced any pain or anything, only the blood in my urine. I had my kidney removed in oct. 2003, I have had many surgeries and many treatments, but I am still here. Make sure to be persistant, and always get 2nd opionions.