ECG Done and all Clear but still having heart-related symptoms?

[fallingstar]

Hi Guys,
so technically I have an argument with myself and tell myself that it's just anxiety, but the symptoms themselves are absolutely terrifying, and telling myself it's all anxiety while I'm in the middle of feeling the way I do is like trying to get blood from a stone - it just doesn't work.

Exactly how I can feel in the middle of a bout of palpitations.