Well I got the call with our Day 3 report and while it wasn't as great as our fert report, it wasn't terrible either.
My clinic gives embryos a grade of 1-3 based on the amount of fragmentation. Grade 1=no fragmentation, Grade2= minimal fragmentation, and Grade 3= significant fragmentation. Fragmentation is when pieces of the cell break off as the cells divide which can be a sign of a poor quality embryo, but not always. There is no difference in success rates from a grade 1 or a grade 2 embryo. They also look at the number of cells an embryo has on day 3. A normally growing embryo has 6-10 cells on day 3. More or less cells is a sign that the embryo isn't growing correctly and is likely aneuploid, or has a chromosomal issue.
My 8 embryos were graded as follows:
3 Grade 2- two 7 cell and one 8 cell
5 Grade 3- one 4 cell, two 7 cell, and two 8 cell
It's a little disappointing to have so many grade 3 embryos, but I know from experience that an embryo's grade can improve from day 3 to day 5. Last cycle we only had grade 2 and grade 3 embryos, but ended up with a grade 1 early blast to transfer on day 5.