After consuming a large meal, if you experience a burning sensation in your chest, you may assume that it's heartburn. However, there is a possibility that reduced blood flow to your heart (angina) or a real heart attack is causing the chest pain. It can be challenging to distinguish between severe heartburn and a heart attack.And ignoring the latter can be very dangerous. Hence, it is important to recognize the typical differences between them and understand when to seek immediate medical attention.