This kinda stuff happens when you put eggs in on different dates. I was laying in bed and heard a baby chick crying. I run to the incubator and I have chicks hatched, siting on the auto turner! All are fine though!
All of us mommies learn by trial & error. That's parenting. You heard your babies cry and got them. All good. No worries. Well, except for the fact I don't see any pics of these precious little newborns.