Embryo development- day 4

We are down to 6 embryos.  The 6 we have are continuing to grow well.  The lab director says that we have passed the hardest part, so at this point the number we have should continue to do well.  And again I feel so blessed. Six is a great number to have.  The embryos will now start expanding into a fluid-filled blastocyst.  There is an inner cell mass that will become the baby and an outer layer that will become the placenta.  I go in tomorrow at 11:30 for the embryo transfer.  The 2 best embryos will be selected for transfer.  We will freeze any embryos that we have still growing.  less than 24 hours to go!