I'm an 18-year-old virgin, and I have never had a sex drive. Ever. I am not and have never been attracted to either sex. The feeling of being "****y" is something I can only imagine, as I've never had any sort of desire to have sex. Even sexual pleasure seems beyond me. I've tried masturbating, but I've only felt pain (if I insert anything) and numbness if I try anything else. Masturbating for me is pretty much like touching any other part of my skin. No sensation.
I'm a pretty normal female in other aspects, though. I don't exercise often (I horseback ride 3x a week and that's it) and I'm 110 pounds on a 5'2'' frame. I went into puberty probably around age 10, and I've had my period regularly since at least age 11. I'm not depressed, and I've never been sexually abused.
I don't get it. I'm the only person I know who has ever been so disinterested and unaffected by sex, and no one ever believes me when I say I am truly just not interested (instead, people think I'm a lesbian in denial, haha, since I don't come off as very feminine). It's not that I dislike the idea of sex--it's just something I've never really felt compelled to do. Is there anything I can do about this? What might be the cause? I know asexuality is a recognized condition, but I'm not satisfied with just calling it incurable asexuality and doing nothing about it :/