This purpose of this study will be to conduct a double-blind, randomized, controlled clinical
trial to determine the association between intravaginal high dose metronidazole (750mg),
intravaginal high dose metronidazole combined with an antifungal agent(750mg metronidazole +
200mg miconazole) and low dose (37.5mg) intravaginal metronidazole, with the rate of
persistent bacterial vaginosis.