Embryo grading: Day 5

Hi,

I had my egg retrieval last week, 22 eggs retrieved, 20 matured and 17 fertilized.

Day 5 we have 3 graded good embryos, 4 graded average and 2 graded average-poor.

With 5 out of the 9 hatching with 1 completely hatched.

All will be sent to PGT-A

The 3 good embryos were graded as:

5AB

5AB

5BA

Should I be concerned with how few good we have compared to average?

The grading is so incredibly confusing.

Thanks for the help!