No, a
heart murmur is only a noise that your heart makes when blood flow is turbulent or uneven. What is causing that sound is the problem, ie. the poor or turbulent flow.
Heart
murmurs, like fevers, are simply indicators that there MAY be disease present. In and of themselves, how loud they are, what part of the
cardiac cycle they occur, etc; is absolutely meaningless. And if someone comes up to you and tells you that they "...have a heart murmur too and this is what you should do..." you should automatically tune them out. It would be like comparing fevers; that is, an exercise in ridiculousness as they can all have different causes. In essense, treat the cause, not the symptom.
Tell your doctor to do an
echocardiogram to see if there are any valvular, structural, or flow abnormalities that is causing you to become winded with exertion.
And no, 7-15 pounds
overweight, though not nice, is not the problem. Whether you need surgical correction for whatever is causing the murmur is too early a question to ask. Let your doctor do the echo first to see if there are any significant problems with your heart. You could have another problem (like
anemia) that is totally non-cardiac related.
Ralph