Hi Trey
Im sorry i dont think I can help. where are you from? Over here in the UK our embryos/fertilised eggs are graded from grade 1 to grade 4, grade 1 being the highest, it all depends on the cell division. Or at least they were at my clinic. my clinic are very strict and anything graded less than a 2 is thrown away!! however out of all the eggs they took from me there were only 4 that made the grade and they put 2 back, a grade 1 and a grade 2, and froze the other 2. And look at me, now 16 wks pregnant with twins!!
dont be disheartened, the clinics know what is best usually I have heard of people on this board getting pregnant with grade 3's or less, and you have had 3 of your bundles put back which gives you a bigger chance that if you had had 1 or 2 out back. the best thing to do now is to rest and wait - tho i know its heard, at least i know THAT is the same all over.
Did your clinic not explain to you what all those numbers meant. Im guessing maybe a 7B is a 7 celled embryo?? Dont know what the B stands for tho.
I hope that someone else can help, if you post where you are from maybe someone else from there can help you, most of us are European but we have a few US girls lurking - tell your wife to rest up, nothing is harder than this 2WW bit!! But we are all here on the board to help you through it
Love
Toni xx