@akohout,
I agree with jespah. I have a 16 year old girl so I understand how much pressure you teens are under. There is a lot. You can start with talking with your parents - they should be able to help you put some things in perspective and to lower your worry.
Also, my 16 year old has been going through a lot of anxiety herself. So I been helping her through this. Do you have an "adjustments counselor" at your school? Someone like a guidance counselor but they focus more on things like anxiety, friend issues, --- the other stuff besides school work and college stuff. She has helped out my daughter - she has given my daughter a pass so if she gets a lot of anxiety she can just go down to the office and chill (color or just relax or talk with her if needed). Some teens are just more sensitive than others to this stress and sometimes just getting some down time can help. Like you said "pause"
I would suggest you try both - talk with your parents and a counselor. They can help you learn the best way to deal with this. And you know what? - even some of the teens that seem like they have their act together -- don't. They are just not showing it.