Hey, I'm seventeen as well, and I have...well, something. Hard to say if it's AS or inwardly directed ADD or whatever, but I definitely know what it's like to have very few friends. Firstly, I know it might be a little out of place to tell you to ignore your parents, but waiting for people to invite you is definitely not going to work. You have to make it known hat you're interested in relationships with peers of similar interests. Without that, none of them know you exist. This is something I have yet to work on; in sixth grade I was the kid who never shut up about Led Zeppelin, and now I'm the kid who just flat out never talks. I just get shy now about going up to someone and talking to them. But it's something we all have to work through.
I hope this helps at any rate.