BV while breastfeeding and pregnant

so my midwife told me I have BV which I already knew. she prescribed flagle* (idk how to spell it) but when I informed her I was still nursing she recommended I treat naturally. one thing she said was to rinse with 1/2 apple cider vinegar and 1/2 water but I've always heard that any form of douching is not good especially during pregnancy. idk how to treat this I'm tired of the embarrassment of the foul odor and I'm sure this can't be healthy for a developing baby. any tips tricks or advice would be greatly appreciated 💙