What Do Frequent Urination, Blood In Urine With Abnormal Cells In Urine Suggest?

I have very frequent urination, had blood in the toilet and the end of my penis after urination about two months ago. I went to urgent care and they said I had a urinary tract infection. Another doctor told me later that he thought they misdiagnosed me because I had blood in my urine but no white blood cells. I made an appointment with a utinologist and they sent my urine to a lab and it came back with abnorma cells but no blood. I have an appointment on Tuesday to have a test where they put a scope in your bladder. The urinologist tested my prostate and said it was normal size. My urine stains my toilet a dark yellow. They said there were not cancer cells in my urine. What do you think is wrong?