I just found out my 2 year old has a heart murmur. What can I expect in the near future? I just took my 2 year old son for his checkup and the doctor said he may have a heart murmur. I am taking him for tests right away. I am wondering if anyone out there can fill me in on what the tests are like , what are the different outcomes of the tests , and what they do for each outcome. Im scared and I dont want any surprizes.