Hi Tilly, I wanted to get back to you so you would not think that you are being ignored. This will take some work and I am reaching out to some others that I know for their expertise.
Just a couple of quick thoughts for right now.
I taught 8th grade for years and you are about the right age for that. I am wondering if that is the grade you are in? One reason for asking is that the counselors at the school would know you. If you are in high school, you are pretty much unknown to them, because you would be so new. And that gets to where you said the school can't know. I don't quite understand. I know that the counselors at my old school would have gone out of their way to provide some help for you. But maybe you are not lucky enough to have that kind of support? So I am wondering about your reasoning for the school not knowing?
And I do know from (once again) years of working with 14 year old girls, that at least some of what you are going through is kind of typical for that age group. Doesn't make it any easier for you. Add the Aspergers on top of that and its a really hard combination to deal with. I can totally understand why you would feel overwhelmed.
What I do know is that you are not "quite dumb". You have written a very intelligent post. I am wondering though about your statement that you can't concentrate in class. If this is something that has actually gone on for years (perhaps more so in math), then not just when you are stressed. It could be that you also have ADD. In fact, for intelligent people, its typically about the time that Algebra rears its ugly head - that the world begans to really fall apart. And ADD would explain the anxiety and depression. Plus, its really hard to diagnose. Anyway, take a look at this link on the symptoms - http://www.help4adhd.org/about/what/WWK8
And if it does sound possible, then you might want to check out this adult website on ADD. It will give you a feeling for what other people are wrestling with. The site is - http://jeffsaddmind.com/for-first-time-visitors
I am wondering why you chose to post to the ADHD site as we also have autism and aspergers sites. Do you suspect something like ADD?
And by the way, this is an interesting link from the Aspergers site -
http://www.medhelp.org/posts/Aspergers-Syndrome/18year-old-son/show/1907776 . I mention it because the answer to the post, the response mentions how important it is to teach or try to teach those things that just don't come natural to someone with Aspergers. Are you getting any help like that?
Point being that it seems like you may a have couple of things going on. And the problem is these are NOT things that you necessarily want to handle alone. You got your diagnosis for aspergers. Did anything come with that? Are you getting any professional help? Or is it like, "hey, you had a stroke - now teach yourself how to walk again?"
I really hope that some of this helps a bit. I can certainly help with anything that could be AD/HD related. Hopefully, I can reach out to a few other members for their support also.
And, do let me know what is going on with your school situation. Many times they can be much more helpful than anything else. Best wishes.