@Barca07: no side effect from pregnyl. It is just a booster. Hcg shot to trick your body that u r pregnant and thus producing more progesterone and delay the AF.
@allykat: OA means obstructive azoospermia. All of our DH, who did mtese and no sperm found, have non obstructive azoospermia.
No. U don't get to choose which one to put in. The tech will pick the best one. I still don't get the day 3 logic from your clinic. They might well just grow the to day 5 and freeze. Day 3 embies don't survive the thaw process very well. Let's say if u don't have any day 5 and 6. Will they thaw all the day 3 to grow to day 5 before the transfer? If they do that and transfer one, re-freezing the rest, I am not sure how well the rest will survive the second thaw. I don't think is cost effective for them either.
They could grow one day 3 and if that doesn't work, you have nothing to transfer for another cycle. This means that they are likely to just do day 3 transfer. In any case, I am just speculating because it is a very weird protocol.
@Sariele: yes, I always have one embie fast dividing than the rest. Have you sort out with the clinic in Perth about the monitoring?