We have 6 embryos. We will see how many continue. (4 of the eggs were immature). The embryologist said if they do well, then they might consider doing a 5 day transfer instead. We told her that we are not sure if we want to take that risk and to have the doctor call us tomorrow when we know more on how they are doing.
Pros of going to 5 day: out of the embryos that survive, you can choose the very best ones to implant, resulting in a higher rate of pregnancy.
Cons of going to 5 day: embryos that could result in a pregnancy may not make it to 5 day outside of the womb. We could lose them all and have nothing to transfer.
Trying to get less excited. It's hard.