A bad day.The embryologist called. The embryos are developing a little more slowly than expected - they are about one day "behind schedule". At Day 3 they expect 6-8 cells and there were 4 in each embryo. Today there are 6-8. Day 5 transfer is supposed to be tomorrow, but unless the babies develop quickly over the next 24 hours, they won't do the transfer but will push it out to Sunday (day 6). From my quick research, day 6 transfers are unusual and the success rates are lower.
My Doctor said that he is not "terribly thrilled" with the results so far and although pregnancy is not impossible, he thinks the slow development of the embryos is "not ideal." He also said that (bearing in mind we are doing the shared risk program so we have two more goes) that there is a lot to gain from the cycle, and if it's unsuccessful we can look at the protocol and see what needs to be changed for next time.