Hello, I want to open this thread about blastocyst day 6. Does anybody have any stories with blastocyst day 6? If you had, how many embryos did you transfer and what was the outcome? I have frozen blastocyt day 6 and am preparing myself to do a FET. Most of patients in clinic had blastocyst day 5 but mine is day 6. Is there a big difference between day 5 and day 6? Does anybody have any information about that? My RE says they are fine, but also recommends to transfer two. I just want to have a singleton, so to transfer one. but I am a little bit worried about that. Do you have any success stories with 1 blast day 6?