swollen vagina help!!

Alyssa
Okay so this might be a TMI for some people but here's the back story you'll need to help me answer this. My fiancé and I were starting to have some fun in bed tonight. And he starts eating me out and everything is good and then when we started having sex it just started to burn a lot and felt dry and I felt a little bit of a tugging sensation. So I just push through so he can finish, but then when he takes it out my vagina is blown up like a balloon like nothing I've ever seen before, CRAZY swollen! 
We don't use condoms so I know it's not a latex allergy, he said he had just brushed his teeth before that so could it be because of that?? I need some input ladies!! Any other ideas? I'm totally freaking out right now!!😫😫😫