Hello, and welcome to HCM!
The symptoms that you are describing are very concerning for a heart attack
. You should immediately go to the hospital emergency room to be evaluated by a doctor.
Using "uppers" is dangerous for many reasons, but specifically for your heart. The heart is caused to beat very fast, which means it needs more blood than normal. At the same time the coronary arteries (which are supply blood to the heart) can be constricted. The chest pain
that results is due to the fact that the heart muscle is literally starving for oxygen
, due to the decreased amount of blood it is receiving (at a time when it needs more than normal).
I wish you the best of health, and thanks for posting on HCM.