what's happening to me 😰

So I've been TTC for a year now and recently if I have sex afterwards it feels like it's swollen and hurts to sit, it's like its throbbing but painful throbbing. I have a apt with my doctor next Thursday and I looked a bunch of stuff up online and I'm really scared now. What could it be! My husband even said it felt really tight and swollen after I told him to feel it because it was hurting so bad! Any suggestions ladies?