Our expert says:
It is sometimes difficult to know whether a racing heart is racing because your body is telling it to do so ("adrenalin", etc - your heart just reacting normally to something outside the heart) or because you have a really abnormal heart rhythm (arrhythmia.)
The best way to tell the difference is to have an ECG during an "attack", (not afterwards) which I suggest you do. However, from what you've told me I suspect your GP is quite correct and your heart is just reacting as it should do, in other words it is an innocent bystander and not the culprit. If it will give you peace of mind see a cardiologist, but it sounds like your GP is on the ball. I hope things improve for you soon.
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