Bacterial vaginosis

Hi im an 18 year old and recently found out i have bacterial vaginosis. I had it for a month already because one doctor told me it was a yeast infection then yesterday i got told it was not and it needed to be treated which she prescribed me metronidazole. I have to take 2 a day and i haven’t felt more sick to my stomach and tired in my life. Has anyone had this before and teach me about it? I had to also use cream and the pills along with birth control. I keep having a burning sensation and the urge to pee bad and i cant stop from going to the bathroom even know i don’t want to pee the cream off. I never had this before. It hurts and is it normal after a day to feel like this?