I am one month pregnant and I have bacterial vaginous and my dr prescriped me metronidazole. I looked online to see if it was safe, but there are no actual studies found for class B, but it could be harmful. The bad side to it is that if I don't get rid of my infection, I could have a miscarriage or premature birth. What should I do? Risk it and just take the meds or wait till I have a miscarriage?