I think you should actually go and talk to someone (your parents) about this, if you lock it all up inside you it could cause a major meltdown sometime.
Since I've been (re-)diagnosed by psychiatrist with asperger I feel a lot more in peace with the habits that I have because of it. Knowing and admitting you have (social) difficulties can help you to find some kind of way for dealing with them.
Also aspies tend to see stuff black and white, more on the negative way. Did your parents say you are antisocial or do you think yourself that way? Also are you sure they don´t care about your mental health? They are your parents after al.
If your parents actually said that you are antisocial I think you should explain the situation to them search on wikipedia for an article about asperger and show it to them. Even better would be to go to an psychiatrist and ask his or hers opinion.
Whatever you do don´t feel ashamed of the way you are, there are so many people dealing with these problems out there.