Our expert says:
From your description I think we can be very confident your symptoms are not due to heart disease. They sound very much as though they are all related to stress and anxiety. People may have palpitations even with perfectly normal hearts, especially under stressful circumstances.
Being young, your risk for heart disease is low, unless you are diabetic, or you smoke, or you have a very bad family history - none of which you mention.
The symptoms in your chest my involve the heart, eg the palpitations, but they do not mean that you have heart disease, and the palpitations do not mean that your heart is becoming weak. By all means have an ECG every year for peace of mind as you have been doing, but worry less about your heart!
I hope this is helpful. Best wishes. JT
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