I'm 17 also (less than a month from 18) and am still a virgin. The reason? I legitimately have never been attracted to anyone I know/have known, not even a crush. Don't get me wrong - I have been attracted to/crushed on people before, but they have only ever been people that I only knew for a few days (i.e. on a holiday), and I'd prefer not to have any one-night stands. I don't view losing my virginity as this whole spiritual thing or anything, I just want some trust built with my partner first.
I definately agree with Dunnig Kruger on their point about reinventing yourself at uni, which is what I plan to do. For reference, I don't party, I hardly ever drink (like literally one glass of wine on VERY special occasions, and one glass of champagne on New Year's), and I plan to stay that way. I am what you may call an "Extroverted Introvert" - I love to spend time with people, but not for extended periods unless I know I can trust them absolutely and get along with them very well. This has led to me not really knowing many people outside of those I go to/used to go to school with. I plan to change this in uni, and have even begun meeting some people currently living at/near my choice university online so that I have some friends in advance.
My advice? Don't worry yourself about it for the moment. If an opportunity presents itself to you on a silver platter, don't be afraid to take it (obviously watching out for all the usual things), but otherwise wait until you get to uni and (and here's the KEY part, try to take this to heart) DON'T tell any little white lies about your likes/dislikes, DON'T try to hide anything that you may be hiding now (obviously not personal matters, I mean more like personality traits, emotions etc.). Make yourself who YOU want to be, instead of trying to please everyone else. A good comparison is this: be who you would be comfortable with being online/anonymous, obviously not hate speech/insults like some anonymous people online do, but rather take it as an opportunity to be completely open about yourself.
Good luck!