Help with vaginal odor??

It's not a bad smell but it's not normal. I'm not sure if it's because of the pregnancy but I have never had this problem. I use pH wash every night but it only helps for so long. This is literally ruined oral sex for me because I won't even let my husband go down on me. He did it once while he was drunk and I wasn't expecting it but it was amazing and he said it wasn't bad just different but I am hating this. Any suggestions?