Your symptoms might be because of an MI (which is more alarming) or just a chest bone pain or a gall stone pain or peptic ulcer disease
. Test like ECG , Stress test
Echo cardiogram can detect if you have any heart disease
.If these test come negative , it is unlikely you have any infarction
.You should get a gall stone work up too. So , I guess you can relax and get a complete workup.