Heyy Jennie i am 17 years old and i have an anxiety diorder. I know what you mean when you say its a constant worry to even leave. Anxiet can make you feel as if you are dying but it does not kill you, even know it feels like it. What happens is your body sets off the "fight or flight". The good thing is if you have a attack you can talk yourself out of it. If you have any questions dont hesitate to ask.
Your friend,
Kelsey