Thanks for the well-wishes everyone. Little Mom is doing great. If it wasn't for modern science we would never have known about the twin. Its called the "Vanishing Twin Syndrome". Its not uncommon. Before the age of sonogram there were probably more twin pregnancies that were not known by the doctor or parents. The twin gets absorb by the mother or forms into a papery membrane that is part of the birth of the healthy baby. (See we know too much). There are multiple reasons why the twin doesn't develop; nutrition, lack of placenta formation, competition, etc.

So, on we go.