I need help! how do i know if i have asperger's syndrome?

You decide. It's OK.: Asperger's / high functioning autism is a continuum and since there's no magic pill to make it go away, there's not much point in acquiring a label as an adult. Why not ask instead, "How can I make the best use of my intellectual gifts & my ability to focus, improve my social skills, learn to read people and talk to them better, choose activities I'm good at, & be happy?" Embrace who you are.