I had to have an ECG about 4 years ago. Then they gave me a 24 hr tape ECG which is really annoying cos you have to sleep with it. Ended up I have an eptopic heartbeat which is nothing to worry about at all and one doctor even said its quite a good thing to have! Bloody scary though. I notice it more when I'm stressed and it feels like I miss a beat then have a big beat that I feel in my throat! It's hard to explain lol
Anyway an ECG isn't anything to worry about its just routine. What was your blood pressure? Maybe it's low blood pressure? Xx