Being who I am, and research minded, I of course came home armed with information from the cardiologist and proceeded to review it online. From what he explained, the two BIG things that can go wrong deal with Atrial Septal Defect (ASD) along with the leaky Tricuspid Valve or a stenosis in the aorta. The first one is called Epstein's Syndrome and means that when the baby is born, the valve leaks and the open area between the atrium's doesn't close. This can cause the baby to be blueish and can lead to heart failure...but we at least know to look for it, and there is surgery to repair the problem as needed. The other big one is Coarcation of the Aorta, which along with the leaky valve, we have a narrowing in the curve of the aorta. This will also involve surgery and is not as dangerous or involved as Epstein's Syndrome. The other, more mild potential causes may be pulmonary or aortic stenosis or VSD...most of which are non-surgical in nature.
We are really hoping that next echo we don't see an enlarged little baby heart.