Painful sex at 39 weeks & 5 days

We haven’t had much sex my whole pregnancy, as it’s hard to get comfy. Last night we had sex, but it hurt so bad, we ended up having to change positions to doggy, which was less painful, then stopped being painful after a little while.

Anyone else like this? I’m thinking it’s my cervix is possibly shorter but I have no clue. I don’t have any bleeding or anything.