Bacterial vaginosis?

Ok so TMI

I think I have bacterial vaginosis, after I had sex with my partner on Sunday there's been a horrific fishy smell down below. Discharge is white. I've never experienced this before and it happened pretty much straight away. We are both clean for stis and stds. It says you will normally need a course of antibiotics however I have no time off for the next 2.5 weeks and currently not under a doc as I've just moved. I have a whole pack of flucloxacillin, do you think this will work in clearing it?

Many thanks and please don't judge. Also any others have any stories about BV?