Rephresh for BV.. thoughts?

I’ve been experiencing BV and after a round of antibiotics It came back (stopped having sex ever since I’ve known I’ve had Bv) I went to the doctor again and she put me on Flagyl. I am currently taking it and hoping it will push my BV away for good. I have a feeling it will not, especially after hearing many stories about BV returning right after multiple rounds antibiotics. I am worried to keep trying antibiotics because I don’t want to form an immunity. My doctor suggested I start using rephresh, she said pills or gel didnt matter. Ive read some iffy reviews and thought to ask some of you of your advice. Thanks!