My little brother has Asperger's Syndrome. He has a moderate to severe case, so I am very familiar with all the symptoms and attributes that come along with AS.
No one here is going to be able to tell you definitively whether or not you have Asperger's, but there are some signs that are pretty standard from case to case.
-Do you have a keen interest in mechanical things like trains, cars, computers, or other machines?
-Do you have trouble reading people's emotions based off their facial expressions? That is to say, do you find yourself asking people "Are you mad at me?" or "Is something wrong?" or "Was that funny?" a lot because you aren't sure what they're thinking?
-When you were a child, did you tend to sleep with hard plastic or metal toys like toy trains or robots or action figures rather than teddy bears or soft plush toys?
-Do you have trouble making eye contact with people when you talk to them? Does direct eye contact make you feel uncomfortable?
-Do you often feel as though your senses are turned up to 11? Like sounds are all too loud, smells are too strong, colors are too bright? Do you have trouble concentrating in noisy restaurants, to the point of distraction and visible upset?
These are just some of the signs of Asperger's. It's by no means a complete list. But if you answered yes to all of those, you might want to get checked out by a psychiatrist. Actually, you might want to go and see a psychiatrist anyway just to put your mind at ease. It's a difficult diagnosis to make, and you should prepare for lots of occupational therapy type testing and IQ tests and things like that because they will need all that information to try to determine if you have Asperger's.
The bright side is that if you DO have it, it's a perfectly liveable syndrome. You've been living with it all this time and you're just fine, right? So you don't have to get bogged down and think that you won't be able to live your life normally or that you aren't "normal" just because you have Asperger's. *IF* you do have it.
I've spent 17 years living with my brother, who has moderate to severe Asperger's Syndrome. I also wrote a 35 page paper on Asperger's Syndrome for my graduate school education class in 2004.