Q2:
C. Metronidazole 250-500mg orally twice daily for 7 days

Yes. Oral metronidazole is the drug of choice. Experts differ on the optimal dose, so either 250mg or 500mg is acceptable, but the patient should be followed-up in 1 month to make sure that the condition has resolved.

In pregnant women, BV has been associated with complications such as premature rupture of the membranes, chorioamnionitis, preterm labor, preterm birth, intraamniotic infection, postpartum endometritis, and postcesarean wound infection. For those reasons, treatment is always recommended in this setting.