I don't have any idea about the hatching part as I have only had 1 transfer of Day 5's (all the rest were day 3's) but if it is hatched and survived the thaw then that's got to be a good thing as it is already so far down the track for you. Good luck and I hope it is already snuggled in nice and tight for the long haul.

Oh, did you find out the sex of the embryo if you had PGD?? You don't have to answer if you do know, I'm just being nosy