Hello, Thanks for the query to H. C. M. Forum.
E C G , ECHO are absolutely normal , hence there is no cause of concern.
However you have taken treatment from a cardiologist like anti
anxiety type.
Now still there is STRONG HEART BEAT ( according to you as mentioned in your query).
Gentleman normal heart beat is 70- 80 / minute.
It may be 60-100 /minute, depending upon the nature and work of an individual.
Let me explain, if you are an athlete and good racer ,your heart beat will be 60 and regular ,good to
palpitation.
If you are over anxious and your life id full of tension and anxiety , your heart beat would be close to 90-100 , still we will call it normal.
So when every thing is normal in test don't worry at all.
Change the nature and habit , and you will be alright.
Good luck.
Dr. HET