@aleax @Dalmaty I would say if you can access some sort of therapy, of have people you can talk to about yourself reliably do so. What you are describing sounds like you are overwhelmed, which whilst not being uncommon during adolescence, is still SUPER hard to deal with. Also, what you are describing about your body hurting is a common effect of being overwhelmed and stressed for too long, and it isn't a good place to be at all.
I hear you! What you are experiencing is real.