Thank you so much for your help.This is what happened.

Our doc found a little bit blood in my son's urion. He refered us to a uologist. The uologist said my son may have infection somewhere so he let him take antibiotics foe a few months. This new doc also found a little bit of urion in my son 's peepee. But she said it's quite normal.She said it's quite odd to do that. I feel we were cheated and my poor son is harmed.
Again thank you fo your time and kindness.