how long do I wait before giving up on eggs?

[beckysaur]

Yesterday (Tuesday) was the 21 day mark for my eggs and one of them hatched right on time. The other three still have yet to hatch. How long do I wait before losing hope?
Three of the eggs did fall out of the nest for up to 18 hours during their first day being sat on.

Thanks for your help!
Becky

P.S. On a lighter note, here's a cute pic of the new baby and her surrogate mom! Silkie baby!

 

[gabrielle1976]

Dont give up that soon . I give them till day 23 and if I dont see any pips then I candle and some poeple have had eggs good till day 25 and hatch. I usually open the tops at the air cell when I do give and to make shure they arnt alive. No one has yet ben able to make babies come out when we want them to except human C sections. Good luck I hope you get lots of cute babies