I personally would follow up with your general physician to see if you need further evaluation. I'm on the side of safe is better than sorry. So, call your regular doctor and make an appointment for as soon as you get in to discuss this.
I think at this point, you shouldn't worry. You've been rechecked and all is normal. Are you feeling less anxious about it now?
HI THERE. THE ecg OFTEN SAYS ABNORMAL, BUT IN MANY CASES ITS NOT A SERIOUS OR CRITICAL ISSUE. GENERALLY THE FITTER PEOPLE ARE , THE MORE LIKELY THAT THE HEART RATE WILL BE IN THE 50'S.
if you are not happy, GO TO A CARDIOLOGIST IN YOUR AREA AND TAKE HIS ADVICE/ REASSURANCE HE WILL PROBABLY BE ABLE TO OFFER YOU.
Sinus arrythmia is normal varient. But it doesnt mean there isnt something wrong. Are you feeling better or no improvement?