Left arm pain and breathing issues, ECG, blood work and chest xrays were normal?

it doesnt sound like a cardiac issue. sounds more stress related to me. usually, but not always the case, with cardiac stuff youll also see cold sweat, nausea & vomiting, and restlessness,...but again, not always. if your xray came back ok, nothing like cariomegaly, if blood work came back ok, no heart attack. if ecg is ok, then their isnt any damage either and your heart is able to transmit an electrical signal as it should. stress can cause gerd. stress can cause panic attacks which can cause chest pain. youre prolly just an anxious little cowgirl! be sure to tell your fears to your MD. if there is a problem (very slim chance) then your MD will do what he/she can to help. again. no. i think your heart is fine.