When the cardiologist themselves has suggested that, then why do you need to worry. You dont know better than him. If you are still worrying then you should go for a psychological counselling to ease the pressure.
Psychological .....wow...!!!!!.......
Didn't expect this kind of briliiant suggestion...I have never seen this kind reply from your callibare of doctor. Keep it up giving this kind of advice. Now I understand what kind of reply patient generally expect from this site.