Odor after your boyfriend cums in you.

Hello eve community,

I am seeking advice from you all. When me and my boyfriend are having sex, he sometimes ejaculates in me. I'm ok with that. The problem is, after he does I notice a weird smelly odor for DAYSSSS after he does it. And sometimes he does it back to back. I am currently taking a daily probiotic supplement (vh essentials probiotic with prebiotic) but it's not quite doing the trick. Please please pleaaaase, any suggestions??? Thanks in advance ❤️