20 weeks pregnant and uncomfortable sex. Please help!

I’m 20 weeks and 4days today and sex is just so uncomfortable. We used to have sex multiple times a week and now we’re

Lucky if we do once a week just because it’s so uncomfortable.

It’s not even my belly that’s the most uncomfortable part it’s my lady parts. It just feels painful honestly. Has anyone had this and it not just been because you’re pregnant but an infection or something?