upper back spasms/chest pain

2011 I was in a car accident head on. Right side head cracked windshield, chest hit sterring wheel (“contusions caused left bundle branch block) Abdomin severly bruised, both knees cut open by dash board colapsing. One year and almost 9 months later I still suffer from back pain and spasms. The spasms are worse during the cold months. Catch breath sometimes so bad, it raises blood pressure (now on meds for) blood pressure during last spasm at doctors office 198/101 . I am 39 years old, female, slightly over weight, maybe 50 lbs. only 5’2 (ft) Still seeing chiropractor, and he’s puzzled too. NO BROKEN BONES. Went to PT for one full year. Now do same exercises at home. Heat seems to be the only help, but I can’t wear a heating pad to return to work! Any advice? PLEASE!!