D.N.
My son has a murmur. It was found when he was about 1 1/2 only because we had a home nurse for a short period of time due to another issue. After that, I was always told the doctor could not find one or not to worry about it. I pushed for a echo at 4 and they did an ultrasound on him. They showed me that he has a little bit of muscle like a string of a violin. Every time his heart pumps/beats, the string twangs. This will not affect him at all and is actually hard to find unless you listen to just the right spot at the right time.