First off, back in my country it's somewhat common to see a lot of sick and mentally-disabled people (I don't want to mention). On my dad's side of my family (only up to grandparents), my grandmother had bad health. It's been passed on to my dad, and I don't know if anything has been passed on to me. I don't know much of my family's medical history.

I've read certain columns, including PS's, about autism and Asperger's syndrome. I don't believe I have Asperger's (or any) syndrome, but I do fit most of the symptoms that they mention (based off Psychcentral):

1.) One of my big problems: avoidance of eye-contact, even with friends (One time, a policeman was talking to me. Right in front of him, my eyes kept darting to his shoes and the tree behind him.)
2.) Speech problems, even though I talk fast, sometimes I accidentally slur my words, then I have to stop talking and recollect my thoughts.
3.) I lose interest in most things I used/was forced to enjoy.
4.) I don't display a lot of emotions. There were a couple of times when my friends said I am heartless because I don't react to some people's deaths, for ex.
5.) I do tend to be obsessive over specific things like music and pencils (I don't know why about pencils), but then, everyone does so this is not a problem.
6.) I always have a habit of shaking my right thigh a lot, usually when I'm nervous, too still, or in deep thought. I remember it being a bad habit in middle school and it was embarassing to be caught by friends. I still do it, and I always have to stop myself.
7.) I can't strike even a line of words with strangers that I don't approve of or that I can't find a good topic with. My parents think I'm always being stupid being mute almost everywhere I go, even at parties.
8.) When someone's telling me directions for an assignment and such, I have to concentrate twice as hard to understand them or I'll forget it in the next three hours.
9.) I feel stupid for not being able to do simple things, I know my inner self is screaming the right things at me but this outer shell is stuck in time or something. One time at a party, my friend's mom was asking me to get her bag for her. There was only one bag behind this chair, but I was stupid enough to say, "Is this it? Is this the bag you're looking for? Is this right?" I wanted to give it to her but I was just standing there.

I don't know if these symptoms are true. Do I have any mental disorder (besides depression and anxiety)? I'm not trying to attract attention, but I just want an honest opinion and tell me if I should be concerned or not worry about it.