Smelly after sex?

My vagina always smells clean with a hint of actual idk vagina smell? But after me and my husband have sex and he cums in me a day or two later my vagina starts to smell. Am I getting a yeast infection? BV? Or is this normal? I always pee after sex I Immediately shower after I pee to make sure it’s clean down there but it doesn’t help? It’s always been like this with me and I’m just now starting to worry about it...