Hi emily,

Just adding a note to Kahlan's great advice, my embrologist had told me that most embies have sufficient energy to grow to day 3, from there the sperm comes into to play, and they have a big development hurdle they need to get over to get to day 5. The quality of the sperm plays a factor in this. My DH was recommended Menevit along with a few other things to improve sperm quality. DH also had the sperm DNA fragmentation test done. This might be something to look into if you haven't already.

In my personal opinion I would now only do blast transfers, I think with the advancements they are making in the lab to transfer embies into blastocyct culture (providing you have a good lab), the increased chances of a BFP with day 5 embies is well worth the risk. Incidently I always had only early blasts for transfer on day 5, and all my frozen blasts were actually grown to day 6 (as they were slow growing). My last cycle which was successful I did assisted hatching, for the first time ever I had a hatching blast at day 5 ET, I think this made a big difference for me, this was my first ever BFP.

Wishing you all the best for a successful cycle, assuming you are still in your TWW. I hope it ends up you have nothing to worry about and get your BFP. xx