The baby's head is the right size, the ventricles are developing at the right rate, the kidney's are functioning, the heart has 4 chambers, ten fingers, and all other parts are functioning just fine. The baby also cooperated and opened it's legs and in between there was ... A PENIS!
Abby's going to be a big sister to a healthy baby BOY!
She's a little disappointed but I think if we would have waited, she would have been even more disappointed when the baby came out. At least she has time to adjust to the idea of having a brother.