If you are not sure whether you have heartburn or something more serious — like a heart attack — you should get yourself checked out.

The most common symptom of coronary heart disease is chest pain (angina) or discomfort, which can also occur in the shoulders, arms, neck, jaw or back. People may mistake this pain for indigestion, which can be dangerous. Sometimes, it’s impossible to tell the difference between the symptoms of heartburn, angina and heart attack.

Symptoms of a heart attack include the sudden onset of tightness, pressure, squeezing, burning or discomfort in the chest, throat, neck or either arm. When these symptoms are accompanied by nausea, vomiting, sweating, shortness of breath or a fainting sensation, one should be especially suspicious that you might be having a heart attack. People who have any risk factors that may predispose them to a heart attack should be particularly cautious. Unfortunately, many people may not be aware they are having a heart attack.

Some clues

• Heart attack pain is never pinpointed.

• Heart attack pain never lasts less than 30 seconds.

• If you smoke, have diabetes, high cholesterol, high blood pressure, are overweight or have a strong family history of heart disease and have any symptom related to the chest or heart, you should be alert.