I am 17 week pregnant and went to the doctor I had him check for a yeast infection and it turns out that I?

have BV (bacterial vaginosis) sp. They gave me a l cream called clindesse to take it has clindamycin phosphate 2 %. I took the l cream it was only one dose. I then read some info. about the l cream and is says it can cause preterm labor and shouldn't be taken by pregant women lly. So know I'm freaked out. I'm also pissed off at my doctor for prescribing a medicine that could effect my pregnancy. Has any one else took this medicine before lly around 17 weeks of pregnancy and if you did how did the outcome of your pregnancy go. Also people who's had BV during pregnancy are welcome to write there thoughts. I read also that not treating BV can cause a late miscarriage in pregnancy...has anyone ever had this outcome. Maybe I just need to stop reading so much information...on this topic. But i'm worried about my baby. Please Help. Thanks for reading:)