Hello dear, thanks for your question on HCM.
I can understand your situation and problem.
At your age ( 14), cardiac cause is less likely. But for your symptoms like
shortness of breath and left sided
chest pain, better to rule out cardiac cause first.
So get done ecg.
If ecg is normal then no need to worry much for cardiac cause.
Anxiety appears more in your case.
Anxiety can worsen GERD (
gastroesophageal reflux disease ).
And this can cause central and left sided chest pain.
So control of anxiety is needed.
Better to
consult psychiatrist and get done
counselling sessions. Try to identify stressor in your life and start working on its solution.
You may require anxiolytic drugs too.
Avoid stress and tension. Be relax and calm.
Don't worry, you will be alright.