So i have pcos and have had my period 3 months. And everytime i jave had sex the last 6 months i bleed.So went to the doctors. She gave me. Pap smear and got a phone call stating i have a bacteria vaginal infection. The gave me metronidazole 500mg x2 tablets. 4x a day for 5 days. But when i got my pills says nothing about a bacteria infection on them just some extra paperwork abput not sharing and some information about trich? Um ok? . And everything ive read online is freaken me out that i have and sti.and that my husband needs to be treated for it. Ive been with him 7 years and no one else. Help please