Hi and welcome!
Can you pinpoint what it IS that you're anxious about? Is it the way you look? Is it some boy that you like? Is it a group of kids that you like or don't like? Is it a class that you're dreading?
Usually with ME, I get anxious when I'm writing a check - isn't that silly? But I start shaking to the point that you can hardly read the writing ! I guess it's because I'm worried about parting with that MUCH money ! It seems to be only when I'm writing a check for a larger amount of money. That tends to really get me shaking. I KNOW the money is in the bank to cover it - I guess I just don't want to part with it. LOL
It CAN be embarrassing tho. I found a way to slow the heartbeat. If you put your finger on your carotid artery (the big one in your neck) where you can feel your pulse, then PUSH on it for a little bit until you can tell that your pulse has slowed down - it will stop the attack. It works!!! It always worked for me. Now I don't have them anymore. Once I learned that I could stop them, I quit having them.
I feel for you. High school is bad enough without this too. God bless and take care. Hugs, Lee