shu,
Thanks for the post.
First, unless you are markedly skilled at cardiac auscultatio, it is very difficult to discern the amount of regurgitation from your murmmer. Moreover, without having any type of comparison, you just cant really do it. Spending your time listening to your murmmer on a frequent basis is not going to accomplish anything except increase your level of worry.
Without any progession of the chest pain over a period of time, its unlikely that is is cardiac in nature even with your family history.
If you are having palpitations or funny heart beats an event monitor or recorder can help tell what your rhythm is.
I would just let your physician take a look and listen to you. If he/she feels that your murmmer or your symptoms have changed he may order another echo to evaluate. If that echo is stable, i probably wouldnt repeat one unless you had a marked change in symptoms.
good luck
Sorry am I misreading your post and the Doc's comments but did you have your last echo 5 years ago and he told you not to have another one just yet??
I hope I am - if i'm not go and get an echo ordered!! My Doc was hopeless if I didn't remember to get mine done it wouldn't (and didn't!!) why don't they have reminders in their system - this is wrong. The health system is too much on a bandaid solution here in Australia and prob the US too. I would imagine that you should have been on anuual echo's at the very least every 3 years?? I am glad you still have a copy of your old one, take this with you when you have your next one they will be able to see the changes even if they don't still have the films.
Take care!