Hurts..?

So I had sex with my boyfriend tonight (yay!) and it went great, everything went smoothly, it hurt a little due to pressure, the last time we had sex was 4th of July. And then somehow during the middle of missionary, my vagina started to burn...? When he looked down at it, nothing was there, we might think it was just bruised. I placed myself sitting in front of a fan to cool myself down and it felt good.

Now it's a couple of hours later, I'm by myself, I was just wondering if it still hurts, it does but not as bad.

I just wanted some help/advice into thinking what I should do. The place where it burns is the labium minor.