Do i have pd or an anxiety disorder in the symptoms: chest pains, shortness of breath, visible shaking in the limbs and internal shaking at night?

Anxiety: Since it is at night i would recommend that you see a sleep disorder specialist as well as a psychiatrist. Also please get to psychotherapy with a competent psychologist. Best wishes.

Teen Parkinson's? No: If by pd you mean parkinson's disease, no - the very youngest cases are around 30 and those are rare. Self diagnosis is often more risky than not so i strongly advise a doctor visit. Your role is important, but more for accurate description than diagnosis. A psychotherapist may help you understand how your body and mind work (well or poorly) together. Best!