I Seem To Have An Acute UTI, Or Something. I

I seem to have an acute UTI, or something. I have always had a pain from time to time on my right side and it always went away. Doctors never seemed too concerned. For the last month I have been treated with two antibiotics for a sinus infection, I never realized I had. I went to the doctor for a problem with my throat, feeling like something was in my throat. The throat issue seems to be resolved, and now yesterday this infection. I am experiencing a lot of pain while urinating and today I had blood in my urine. Actual deposits of blood. There isn't any blood now and I am continuing to drink a lot of water as well as cranberry juice. I have an appointment tomorrow with a PA, the same one that prescribed my antibiotics. I don't usually see her as I am very fortunate to have to go to the doctor once of twice a year. Any advice?