The clinic called on Day6 to let us know that none of the remaining six embryos made it to blastocyst. As such they are not viable and will be discarded. I knew the quality wasn't great, but it was a severe shock to realize they are all gone. I spent the day crying on and off. I know they transferred the two best on Day3, but I now have serious doubts about their chances.
Prof said that as disappointing and worrying as it is, at least this is a clear end. If this cycle works, it works. If it doesn't, we are done. We don't even have to worry about whether or not to do an FET. He is right on that score, but that doesn't make it hurt any less today.
UPDATED: For the record, there is not really a concern with the donor's egg quality. She was a proven donor with a highly successful previous record. We do not have any idea what went wrong.