Chest hurting sounds bad. Not a Dr but have Reynaud's exacerbated by ADHD meds and haven't experienced chest pain. Are you sure it directly follows handling frozen food etc? Could be related or coincidental - so many things can cause chest pain, from harmless but temporarily hurty intercostal pain all the way to cardiac arrest. Other details (weight, age, genetic history, other medications/treatments, smoking/drinking/substance status) also matter so it's worth bringing up with your doctor, unless you're in America in which case just ask ChatGPT.