Day 5 check

Si

Just got a note from our Dr that 4 of our embryos (7 fertilized) made it to blast, but were too small to grade or biopsy. They’re planning to check in on all embryos (I assume all 7, since they didn’t mention any had stopped growing) again tomorrow to see how they’ve progressed.

Assuming the 4 are at ‘early blast’ stage? Is it common for embryos to blast, but be too small to grade/biopsy? Has anyone had success transferring an ungraded embryo?