Needed to vent

I was born a preemie(thus 'adult-preemie.blogspot.com') and I do not know if the problems I have are connected with my being a preemie or not. I born in November. I was supposed to be born in February (if I remember right). I spent the first three months of my life at the hospital - my parents and grandparents from both sides visited often. I have an older brother (he was around two when I was born) and a four years younger sister. Both my siblings are normal. My little sister has friends, two jobs, and so on. My brother has been out of the house for several years now. I am in a dead end job, which I'd like to get out of. I live at home with my parents. I do not drive nor do I wish to drive.
I always had help in one form or another as a kid and all through school so whatever is wrong with me didn't effect things. Now that I have to be a grownup all of the sudden I have disabilities I was unaware of. The thing is my mom says she's told me these things all along but I have no memory of being told before. I do remember at 12 or so being told that I had had a twin that died before you could tell if it was a boy or girl and I knew I was a preemie (we had baby pictures of us three kids on the wall the whole time I was growing up), I knew I was different but up until recently it didn't effect anything. I was in adaptive P.E. except in the 7th grade and later in 10 -12th grade (I chose to be home schooled after 9th grade). I'm shy, I'm anti-social, I have trouble making the simplest of decisions. I don't like being touched, but sometimes I want to be hugged.

I just want to know what's wrong with me.