Hey tima im really sorry to hear you have OHSS! and i hope you get better really soon. From my understanding they will only freeze the ones that are good quality and will survive the thaw, thats a really good amount though so dont be hard on your self, i had 15 eggs collected but only 4 made it to the blastie stage. 3 were day 5 embryo's and 1 was a day 6 embryo (took a day longer to get to the full blsatie stage) it is very normal to have some that stop growing. Best wishes xx