First, let me say that you are very brave for writing and by doing so you may help others.
From my own personal experiences, I have taught at college level many wonderful individuals with Asperger's. These students are super thinkers in my class and bring creativity and information that their non-Asperger peers may not. Each one had struggles from time to time (which some recognized was pretty normal "growing up stuff, too".) But, they also enjoyed being part of the college atmosphere and may their own set of friends or found activities that they were comfortable joining.
In addition, you may wish to talk to a counselor (including one in school), another grown-up (such as your parent) or a person who you trust to guide you and assist you with your feeling sad and depressed.
Here are some websites with info about Asperger's. Kyles Treehouse has a teen boy that helps to write about it. So, does ZacBrowser.