Bf came in me.. BV?

Hi my bf came in me last Saturday and then he did it twice on Monday lmao, I’m on bc and I never let him do it but since I had heard a lot of woman let it happen when they’re on bc I said why not and he’s always wanted to. I’ve had a lot of discharge but it is now Friday and my vagina got a smell to it and it started this morning, I heard semen messes with your pH, should I wait a few days and see if it rebalances? And if it doesn’t would that be BV?