Not the best test
An ekg is not necessarily the best test for a murmur, especially one your doc suggested you not worry about.
There are some benign murmurs. An u/s of the heart
) is a better test to evaluate valvular stuctures but if you feel well, have no symptoms and your doctor had told you not to worry about the murmur, i wouldn't pursue the studies on your own.
Answer assisted by David Miller, Medical Student