I don't think so. The IRBB does not usually cause chest pain by itself, but can be seen in the setting of a heart attack by infarcting part of the right bundle. The amitriptyline does have anticholinergic effects and can cause coronary ischemia in patients following heart attacks. How sure are you that the pain you had was secondary to esophageal spasm and not heart disease?
Regards
Bubbles 410