Yeast infections

Ok soo long story short I had BV got antibiotics it went away all was good few days later realized I had a yeast infection (caused by the antibiotics) got a single dose antifungal took that and all was good day 5 after taking the antifungal and it’s coming back, I really want to cry but my issue is I have to get a tooth looked at might be infected so if the dentist puts me on antibiotics for that do I then have to wait to take care of the yeast infection cause my doctor will have to put me on a longer dose or something and I’m not sure if I could get away with just issuing the suppositorys from the drug store or if I can do that if I have to be put on antibiotics this is my first yeast infection so I really don’t know what to do (my doctor prescribed the single dose pill)