Pain maybe from arousal? Help!

Isobel

Hey everyone, I have some questions... so I just started dating someone for the first time and things are slowly getting more intimate. Whenever I go over to his house we cuddle and watch tv/movies. I’ve noticed that once I get back home my vagina hurts a lot. Today is the second times it’s happened but the entrance to the vagina seems really swollen and it’s pretty painful. I can’t sit on one side or put pressure on it without wincing. I’ve also noticed that I’m wet when I leave his house. Is this swelling and pain from arousal? Or do I have an infection? I am very confused and kind of concerned... please let me know what you think the issue is and if there are any solutions!! Thanks :)