Listen!!!!
If they have hair growing out of them it's probably a good chance that it's ingrown hairs.
I mean, you've had sex once, right? And after our first time, im sure the majority of us go through the "oh my god I contracted some weird disease" phase.
I really think you're fine though.
Was the girl you were with a virgin too?
If not, then it never hurts to get checked out, but if she was a virgin, then i'm positive you're fine.
The symptoms you give don't really seem like herpes or warts to me. If theres tons and tons of them down there, then thats a bit odd, and you should get it checked out.
But remember, if you shave down there too, guy or girl, your skin becomes irritated very easily.
And ingrown hairs are seen as red little bumps (that can have hair in them)
i hope you're okay, but just look into your partner and find out who (if anyone) they've been dealing with. And if you're still really freaked out, go to the doctor. It's always the best solution.