Swollen inner lip??

I think it's called the labia or something (sorry) but it's not the very outside lips that you see it's the thinner ones just under that. Anyway, I had sex today with my SO and usually after sex it's a little swollen but goes away in an hour or so, but now it's been about 10 hours since we had sex and it's more swollen than usual. My vagina was also tighter than usual and was hard to get in even though it was plenty wet.