Russ how are you btw? take it easy and don't stress!
Maybe Laura can run the forum for a period while you take a brake from worries and beein her for us? Or maybe what you need just now is more info from the other forum members....

You know that best yourself, but take it slow and easy... so that you don't provoke the heart.

Try JHP brand Japanese Peppermint Oil rubbed and massaged into the chest and numb muscles... That helps! I only have tightening some times on the sides... not in the middle.. and i have never been as tight muscled in the chest as you described you are going through.. but JHP oil might and most probably will help you too!

Take care Russ!

Ole.