I have been having blood in my urine. No tests showed a cause. I again have blood in the urine which is noticeable for at least 1 day. I had numerous blood tests and urine tests with no problems showing up. I am diabetic, have had pre cancerous tumors on my kidney, a cyst, adrenal gland removed, my kidney is a horse shoe kidney. Is there anything I can mention to my Doctors that they may not have looked for?