Bruised down thereee? Is it possible?

Im 16, a virgin. For some reason, my vagina feels kinda like it has a bruise on it if i touch a certain part or sit down the wrong way. Its like a sharp pain, just like a bruise. Its been there for maybe 2 days i think. There isn't any bruise that i notice and i have no other symptoms at all (doesnt hurt to pee ect.) Just hurts when i physically like touch the spot or sit weirdly. I'm not goin to the docter for this unless something else changes, like i have inflammation or somethin, which i don't. I was just wondering if its possible to bruise this? How long does it take to go away? Is there anything I can doo? Thanks (: