
The most common symptoms of a heart attack are:
Central chest pain
The pain can spread to the arms, neck or jaw
Some people can feel sick or sweaty as well as having chest pain
Some people can feel short of breath as well as having chest pain
There are also less common symptoms, such as light-headedness, a pain that feels like bad indigestion, and a dull ache or 'heavy' feeling in the chest.
This is from the British heart Foundatio web site :)