Hi dc runningmama!
We got BFP twice from morulas - the first time we had pretty bad looking morulas on day 5, transferred the 2 the embryolosti thought looked the "least bad" and got a BFN. 2 of the morulas from that same batch became blasts on day 6 and we transferred them in a subsequent FET cycle, and were shocked to get a BFP - it was a singleton (we later m/c at 6 weeks, but we did get a BFP from these morulas).
The second time we transferred one blast and one morula "hours away from being a blast" which sounds just like what you are going thru, and i am now 23 weeks pregnant with twins! I read someehre that girl embryos develop slower than boy embryos, which is why so many of the IVF babies are boys (b/c they get selected more often as the "best looking embryo")... so many of us were probably day 5 morulas in our very early days
Good luck, it sounds like you have great chances for this cycle!
Me: 31, DH: 39, low sperm count, motility & poor morphology
IVF #1 Sep 09 BFN
FET Dec 09 BFP, m/c 6 wks
IVF #2 Jun 09 BFP! beta 9dp5dt 176!! Twins due Mar 17
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