Hello dear
I understand your concern
Pain in the upper back and chest could be
muscle strain or acid refulx disease.
Heart problem has been rue out as heart test was negative.
Take following advises:
Take proper rest and avoid activity that cause pain.
Tablet ibuprufen three times daily for 3-4 days.
Tablet esmoprozole and metoclopromide on empty stomach.
Apply warm pad application.
Do not lies on the affected area.
Take
soft diet like banana, curd, rice, applesauce and toast.
Do not lies down just after eating.
Do regular exercise like walking and and medication.
If pain is severe, you can wear elastic creepe bandage to support the breathing and to reduce the pain.
Hope this may help you
Contact HCM for further health query
Best regards
Dr. Sagar