Here's a thought I had. If there's anything really wrong with your body, it finds a way to tell you. When you have a cold you sneeze. When there are toxins in your body, you throw up.

The body is a incredible, self-maintaining machine. And, at 18 years of age, it's just starting its mature phase. And unless you have a family history of some kind of disease, the chances of spontaneously getting some sort of life-threatening condition [i.E. Cancers, heart disease] are very very slim to none.

And, since you know the classic physical symptoms of anxiety, you'll be able to determine what's normal for you and what's not when you get pain.

The hardest part is just telling yourself that it's all your head. :/ but deep deep down, you know you're probably ok.

Turn on some good music and ignore your wierd thoughts.

Ya true. I meen myt minds is messed up. My mental health is horrible. My physical is supposely good. Sometiems I just wanna kill myself

When I was in thailand a few weeks ago I had mulitple panic attacks every day and my friend just turned to me and said " hey, if there was anything seriously wrong physically with you, you would be dead by now". Its all in my mind, and when you know that you can calm yourself down more.