Pimple-like, ingrown hair bump on vagina!

Ok, so I'm 17 years old and I haven't been sexually active in over three months now. The last boyfriend I had tested negative for any STDs. A couple of days ago, I noticed a small, hard bump beginning to form under my skin on the outside of my vagina. Not in or on it, just the outside. I shave at least once every couples of weeks and I figured it must be an ingrown hair because it's all starting to grow back in. However, this morning in the shower, I noticed it had turned into a pimple-like white head. I panicked, of course, and went right to trying to pop it. It popped, but instead of the normal white puss, blood came out instead and a flesh-like head is still there! It doesn't hurt to touch, but it is a tad sensitive if my clothes brush against it the wrong way or something. I've had a wart on my toe before, and when trying to pop it, it bled yet the whitish head still remained. Now i'm freaked that it's a wart!

I need some advice though! It'd be absolutely AWESOME if anyone had some insight. I'd ask my mom, but I'm with my dad aross the state! =[