Metronidazole
"After reading reviews on this medication I was  so scared to take it because of all the negative side effects people had from it. After blowing it off for 3 weeks I finally decided it's was better for me and also the baby if I just sucked it up and took it. I DIDN'T HAVE A SINGLE SIDE EFFECT!!!!!  BV can cause early labor (for the pregnant ladies). I did have a lot of discharge and my vag did have a weird smell and none of the "natural cures"  on the internet worked after 24 hours on the pills the smell and discharge was gone completely. The pill is disgusting but if you take it with juice it's not horrible. My doctor stressed that eating a heavy meal with this pill was a must if I didn't want the side effects I haven't had BV since"