Hello I Am 24 Years Of Age And Happily Married.

Hello i am 24 years of age and happily married. Me and my husband started trying to conceive since October of 2015 but went to my doctor and she said that i have bacterial infection so then she later prescribed me with metronidazole to get rid of bv. It is now march and we are still trying to conceive. However i believe that this month can be month for us because my bacterial infection is now gone. We had sex on my ovulation day and now its 5 days later and have a thick white creamy discharge. It doesnt have a smell and it doesnt itch which is total opposite of how i had my bacterial infection. could i be pregnant? Also i have been having some heart palpitations which i have never had before. I take prenatalvitamins everyday and drink lots of water.also can bacterial infection cause infertility?