6 Day Blastocyst? Just found out that none of my embryos have reached 5 day blast. Any positive stories?

Hey all.

Exactly what the title says pretty much.

I just got my 5 day call from the embryologist and while on day 3 some of them were growing kinda slow they were all growing and one was even growing fast, come day 5 all 5 of them are growing between 24-48 hours slow. They’re gonna let them grow for another day to see if they will reach blastocyst stage.

This call feels like a kick in the gut. Our last resort to becoming parents and I’m so upset. Did anyone have slow growing embabies?