CROSS POST FROM INFERTILITY FOR ANYONE WHO WENT THROUGH IVF - Can Anyone Who HAD EMBRYOS FROZEN TELL ME WHAT THIS GRADING REPORT MEANS?

I had my baby girl 15 MOS ago:) We are thinking of trying for a second child in the summer. I pulled out my report I was given on the 4 embryos that were frozen and was wondering what all this means.

1. expanded blast BB
2.hatching blast BB
3. hatching blast BA
4. early blast

PS. The letters after are what is confusing me most!

Thank you.

Message edited 1/11/2010 10:45:24 AM.