Do I have Asperger's Syndrome?

Hi I have some questions on asperger's syndrome. I was a very shy kid growing up but then became pretty social until 8th grade summer where my friends started ditching me. I felt like I was alone and started getting severely depressed. I was very socially awkward at school and was contemplating suicide. I started getting better but it went on for a while without me telling anyone what was going on. Now I feel like a different person. I used to be getting straight A's in school and now its hard for me to care about things. My thought process is now in images most of the times which leads me to space out a lot and now I often don't think in words. I feel awkward sometimes and often don't know what to do with my arms. I am very athletic and when I'm playing sports I get distracted sometimes because I don't know what to do with my arms. I also don't feel like going out a lot for some reason and I feel dumber. I am wondering if I have developed Asperger's Syndrome and if I have the symptoms, what can I do to treat this and be the old me?