How to not kill the mood...?

Hi everyone! First time poster here.

My husband and I are starting to try to conceive this month. My question is, how do I remind him not to pull out (sorry if TMI) and not kill the mood?

I don’t want to seem obsessive about getting pregnant and still keeping it fun, so I don’t want to be blunt and commanding about it.

What did y’all say to remind your men?

Thanks ❤️