I had 12 mature eggs and 10 fertilized. The next day 1 stopped growing and 5 went sideways. 4 were really good. Of those 4, they continued to look good on day 3. My RE did not want to do a 5 day transfer, unless I had more viable eggs. I transferred 3 embryos and the other one did not make it to blast so I had none left to freeze. My RE said that often the embryos do better in you, than in a dish.

My first IVF I only got four mature eggs. All four fertilized but by day three two had stopped developing. We tranferred the remaining two and I got pregnant and had a little girl. This last cycle we got eight eggs and all of them fertilized. One was poor quality, we transferred two on day three and froze the remaining five. That cycle didn't work so we are hoping to do an FET after the holidays. Good luck. I hope you get your BFP!

Mine had the general consensus that if you have more fertilized eggs, better chances to have more to go to day 5. So we did a 5 day transfer...BUT we had 19 eggs retrieved, 12 were mature, 11 fertilized. 4 of them didn't look great from the get go. As of day 4, the other 7 were doing great. We walk in the day of ET, and were told they all stopped growing on day 4 (Morula), except for 1 that made it to full Blastocyst stage. We were really surpised, as it never occurred to us that this could happen. So we transferred 1 blastocyst and 1 morula. None of the others were any good to freeze. Lab told me the 1 late Morula went to a Blastocyst a day later BUT they put it under the microscope and it had way too much fragmentation. Anyway, I guess there's no rhyme or reason how they develop. Seems though that going to 5 day, it increases your chances of the eggs stopping to grow before the 5 days are up. Either way, we got our BFP and have our 1st u/s on 12/17!!

I guess I have some irrational fear (or maybe not so irrational?) that with only 5 eggs, waiting until day 5 might put them at risk? I wish I understood the process better and knew for sure whether or not there was any advantage to randomly choosing two on day 3 and putting them in, or waiting until day 5 to see which are the strongest.

1st IVF: 6 retrieved, 2 fertilized, transferred after day 3 (failed)

2nd IVF: 4 retrieved, 1 fertilized, transferred day 3 (failed)

3rd IVF: 7 retrieved, 3 fertilized, transferred day 3 (failed)

4th IVF: 3 retrieved, 2 fertilized, transferred day 3 (in 2ww!!!!!!)

6 Retrieved
4 Fertilized
Transfered 2 on Day 3
Of the 2 left one arrested at day 4
and the other didn't make it to freeze due to too much fragmentation - too low quality to survive freeze/thaw.

I've only done IVF once, but I had only 2 eggs, both fertilized, but only one made it to day 3 transfer. (and it worked!)

I had 12 eggs, 10 fertilized. Had 5 good quality embryos at time of transfer (4 day transfer), transferred 4, the last embryo grew to blast stage but too poor a quality to survive a freeze and thaw. So none left to freeze.