bacterial vaginosis and yeast infection during first trimester

Has anyone was treated for bacterial vaginosis infection or yeast infection during first trimester. Are they common infections? What causes that? And what medicines are safe to take for treating these infections during 12w of pregnancy? My OB has prescribed me metronidazole 500mg (to take for seven days) for bacterial vaginosis and fluconazole 150 mg one tablet only for yeast infection. She said it is safe to take it however I am still hesitating. Please I need your advice.

[ttc1010]

If you're concerned, I would call your doc again.  However, bacterial vaginosis can be harmful to your baby or cause pre-term labor so its really important that it gets treated.  Goodluck!