Heartburn is commonly identified the same as experiencing a heart attack. In some cases, when people feel chest pain, they overreact and think that they are having a heart attack just to discover out that it is only acid reflux. While that is not bad -- or definitely much better than having an actual heart attack, there is a disadvantage to it. In some cases, people really are experiencing a real heart attack and they dismiss it as acid reflux which could have really dire results. So when chest discomfort happens to be accompanied by nausea, discomfort in the jaw or arm, or trouble taking a breath, it may not be such a great idea to chalk it up to a bout of acid reflux.