I keep getting chest pains doctors have done ecg multiple times ct scans with dye a chest xray but all are normal its not heartburn either so they don't know what it is it really scares me I get stabbing pain in the chest right above my heart and squeezing pain too I also get palpitations  and my family has a history of heart problems my uncle died of a enlarged heart before he could get his pacemaker and my nanny has a pacemaker to regulate her heartbeat as she had a missing beat so not sure why I keep getting these it only started last November But I've never had them before then