Welcome to Health Care MagicECHOcardiogram
(heart sonogram) is highly operator dependent... as oppsed to EKG, which is machine oriented...
It requires training to do! / lot more to interpret!!
If there was anything really serious, the doctor would not have allowed you to go home...
There are several causes, artefact being common..
Forget it and enjoy yourself...
The treating doctor alone can suggest further based on his assessment of the situation.
Wishing speedy recovery