I'm on CD 1 of my first ever FET cycle after four crappy stims. From my third cycle, I was able to get one single miraculous frosty, which is the one I'll be using up this cycle, more out of interest to see if it will work than out of any real hope...
You see, the emby was a very strange one which followed the following growth pattern in the lab:
Day 1: 2PN
Day 2: 4 cell
Day 3: 5 cell
Day 4: 8 cell compacting
Day 5: 12 cell compacting (but still not a morula; lab told me at transfer that it would not survive)
Day 6: Blasty!! (possibly expanding blasty), frozen on this day
I don't know how it is possible for such a slow, crappy emby to suddenly become a blasty overnight, and FS told me back then that he does not have high hopes for it due to its erratic growth. However I'm currently taking three months off stimming anyway to try and improve my egg quality with DHEA, so in the meantime I wanted to try an FET with this peculiar frosty just to 100% ensure it won't work. I'm pretty much expecting it to not survive the thaw, because even though my clinic said 90-95% of their blasties will thaw okay, I just don't think this one will be strong enough. But we'll see.
Anyway, I wanted to ask if anyone has any experiences with undertaking an FET with only one emby that was slow or erratic, and if so, did it survive the thaw okay, and did you get a BFP?