I have had gross hematuria for 4 months. I have had several CT scans, blood tests and procedures which ruled out infection and stones. I am scheduled for an operation on Monday to put a camera in my kidney since the cystoscopy showed blood squirting from my left kidney. A week ago I had two beers and since then I have had no blood in my urine. Why could this be? I do have more back pain than usual on my left side. Any idea as to why a beer would stop the hematuria? Is it possible that I have microscopic hematuria now? Could my ureter be clogged? I am assuming a beer would not cure the underlying condition of the hematuria. I am a 29 year old female in otherwise good health.