Heart disease or just hypochondria?

I am 19 years old 200 pounds, decent shape, I suffer from severe panic disorder, but I'm scared that that's not all I suffer from. I have these sharp shooting pains in my left arm that go from the under side of the top to me finger tips, I have chest pains, my blood pressure has been up to 185/105. I've had countless ekgs, and a few chest x rays from several different doctors, and they say my heart is healthy as they can be and that it's just stress and anxiety... But I just can't help but to feel like something horrible is wrong... They put me on kpins for anxiety and that helped that but the symptoms of heart disease are still there... Then there's the whole tumor thing pressing on a nerve, I may also include my mom had a myocardial infarction at the age of 39 but everyone keeps saying I'm healthy as an ox...