Hello @antman and welcome to Mayo Clinic Connect. I understand you are having concern over your radiating pain following eating. I see that @astaingegerdm has responded with some information based on her experience.

Did your care team in the ER mention doing follow up with your primary care doctor or a Gastroenterologist for next steps? If not, have you considered calling to set up a follow up appointment to continue to investigate the root cause now that you've ruled out heart problems?