I'm sorry sweety, I have these crying spells that just comes out of anywhere, but they are tied into my depressive states.
Is there a school counselor that you can confide in or talk to? Remember, if things gets too much to handle, you can call a crisis center or 911 if you feel like your a danger to yourself or others. They are there to help. I've called them a few times and I got great help. Good luck sweety
Now I feel like crying for you!