Dear friend, welcome to HCM !
Is the shoulder and arm involved the left?
There are three immediate differentials :
1- anxiety manifestations
2- cardiac ischaemia -pre -attack states
Your description fits all three possibilities, but none is perfect. heart attack
pain is always on the left side.
So, still important to rule out cardiac affection by an EKG, Xray chest and affected shoulder.
An xray of the cervical spine
may also be done to look for neuropathic pain
, but it won't cause chest pain
You should seek counselling
for anxiety also and be treated for it if tests are negative.
Try to relax.
Take care and please keep me informed of your progress.
Good Luck !
I hope to have answered your query satisfactorily.
May I request for your rating and review of this answer before you accept the answer and close the query (if there are no more follow up questions)?
Thank you !