Personal: I have an issue and need help

Okay so I did the dirty with someone and they decided to go to a hole I'm not normally okay with but I let it happen. Then after doing that for a couple seconds they decided to go back to my vagina. Which I know isn't a good thing! I didn't entice them to do this its just that boys are idiots. But now I have a burning sensation in my vagina and its uncomfortable to pee. Is this an infection from the event? Or just irritation? (Because the event lasted for a long period of time)