i was born with a heart murmur, back in 1985. because of it, i was born a "blue baby." i wasn't diagnosed with a murmur until i was about 2-mo's old. they told my mother the same thing, that it would clear up on it's own. then, after some more doctor's appointments, they gave me a 2-yr life expectancy.
low & behold, i'm 21-yr's of age & pregnant myself. my heart condition never fully healed itself, so i have yearly check-up's with a cardiologist. everything has been fine. i live a completely normal life.
because of my heart condition, i am a high risk pregnancy. i had a fetal-echo performed at the end of may, to check the baby's heart. my baby is healthy, as is their heart. my biggest worry is now at rest.
as for your son, i'm sure he'll be fine. don't stress yourself out. it is common for a baby to have a heart murmur. also, try not to research too much, because you'll come across a lot of scarey things which will only cause you to stress out more. wait until you see a cardiologist. i wish you & your child lots of luck. if you have any questions, i'd be more than happy to answer them. i know quite a bit about heart problems from speaking with my own doctor's.