I am a teenager with no interest in sex.

I am a teenage girl. Yeah, those crazy teenage hormones should be guiding me to do crazy things, and have all sorts of daydreams, and yet...I have no interest at all in sex.
Really, I don't give a damn at all about it.
(Actually, it might scare me a little. And oral sex? That totally freaks me out.)
Well...is it normal??