He knows too damn much!

I don't know if I feel embarrassed or what. My SO spends so much time with his face in my vagina, he knows more about what's going on with my body than I do. I'm MORTIFIED!  Last week after giving me oral and regular sex he tells me, "you're about to start your period".  According to Glow, my period was three days away. The very next day, I start my period. 😐. He says it SMELLS and TASTES different depending on where I am in my cycle. He's not even on Glow with me anymore so wth!  Today we just get done have sex and he tells me, "I think you've got BV again". Like SERIOUSLY?!?! 😳. EMBARRASSING. Honestly I felt something was different only about an hour before he mentioned it to me, but I have no discharge and we started fooling around in the shower. He must have smelled me...oh Lord please don't let me die of embarrassment....and I washed good with soap too. I'm getting some metronidazole first thing in the morning. What am I going to do?  I'm embarrassed but he's so matter of fact about everything.