I'm so sorry. I know how you feel. My ER was on 12/4. We had 27 eggs, 20 mature, 15 fertilized w/ICSI (all perfect on day3), and we ended up with 4 blasts to freeze. Thank goodness we didn't have a fresh transfer because I developed moderate OHSS. We have MFI and my egg quality is good so my doc said it was probably due to DNA fragmented sperm or possibly but highly unlikely a lab issue. My center is considered to have one of the best labs in the world.
Hang in there.