I had bv and a kidney infection with my son which sent me into preterm labor at 25weeks after 4 days in the hospital on iv antibiotics they sent me home and they had me take macrobid twice a day for two weeks then once a day for the rest of my pregnancy. I delivered at 35w.
Yes I had it at 21 weeks that's the nastiest pill ever but I took them and I'm fine now.
I had BV. Also gave me the yeast infection. So I did monistat 7 for that. But the pills for the BV made me have diarrhea. Tmi. But that's all!
I got it after I use over the counter meds. For a yeast infection the next week I went to the doctor & they told me I had BV, it cleared up quick when I took the meds. But they are so gross. U almost don't want to take them.
I also had it around 16 weeks. Only down fall to the medicine was it have me a yeast infection after the 7 days but my midwife said that's normal with that medicine.
Yeah I've had it when I was 12 weeks pregnant and my doctor prescribed me with the same thing. Doctors know what they're doing so I wouldn't worry about it harming the baby you'll be fine :)