FJ - you could always take Ural in the meantime (I'm pretty sure it is safe to take during pg but maybe check at your chemist) or you could up your cranberry juice and water intake which should help too hun. If you don't have any symptoms like burning or stinging when you pee it might not be a UTI and could just be that you pee was more concentrated. Have you been drinking lots of water lately or not enough????
Good luck!