Open Question: i think something is wrong with me. it hurts when i pee.?

the past week or more my bladder has been acting weird. the first few days i had to go even when i didn't drink anything, smelled like fish, cloudy, and some blood. i drank alot of cranberry juice and it seemed like it went away but the past 2 days i have had the same symptoms i had in the beginning but with no blood. i think the blood might be coming back though. i also saw brown flake-like things in my urine