Fully hatched day 5 embryo??

Hey all! I transferred a fully hatched day 5 embryo on new years eve! It was FET. This was my first transfer. I had to freeze all due to OHSS. My doc said it was a great embryo but I'm just a little nervous because I hadn't seen one like that before. Is it good, bad? Do you have any stories to share? Do you know anything about these types of embryos? Have you transferred a fully hatched embryo? What was the result? I'd appreciate any input! Thank you!