Hi Shambles! Welcome to Wrong Planet! Check out the interesting and helpful articles and forums here. There is nothing to be upset or afraid about. It was a great relief to me when I finally found out why I am so different from most people. Not knowing had been very stressful. Once you know where you stand, you and your psych doc will able to formulate how to deal with your issues. That will help you deal with this.
Although I am self diagnosed (online tests, research, relative did research and says I am Aspie, too), there is no question in my mind that I have Asperger's Syndrome. I meet too many of the criteria to be other wise. I also meet the criteria for Avoident Personality Disorder (AvPD), as I have almost every trait of that, and Executive Function Disorder (EFD). I always been very disorganized.
That's the thing with the Autism/Asperger's spectrum. There are a number of other conditions that can be comorbid with it. Like we really need more complication in our lives.
Don't let this get you down, though, and remember, you are among friends here at WP!
_________________
If a man does not keep pace with his companions, perhaps it is because he hears a different drummer.
Let him step to the music which he hears, however measured, or far away.--Henry David Thoreau