My dreaded bacterial vaginosis is back (sad face)? how do i keep it from recurring?

Bacterial vaginosis: "Relapse can be treated with a prolonged course of oral or vaginal metronidazole or clindamycin for seven days; the United States Center for Disease Control and Prevention suggests a treatment regimen different from the initial or previous treatment regimen (eg, oral treatment if vaginal treatment used previously).If you've had more than three episodes of BV in the past 12 months, you may >