Good news! Stella's hear murmur is a common one that is often found in preemies. It's a pulmonary something-or-other. Can't quite remember exactly what the doctor said (unusual for me, I know). Essentially, the blood leaves the heart and the vessel splits in two to feed blood to each lung. The angle of that split is acute and this causes turbulence in the blood flow and the murmur. The murmur doesn't affect the functionality of her heart. As Stella grows, the angle will change and the turbulence and the murmur should go away. Doc said that she'll most likely outgrow it by the time she's 6 months old. Our pediatricians will monitor her and unless something else comes up, that's all we need to do.
They did an exam, an EKG and an echo of her heart. She was really good for all of them, especially the echo where she needed to lie still for over 30 minutes. We did have to take one break when the technician was pushing the ultrasound probe into her stomach and Stella didn't like it, but overall it went really well. She's such a trooper.