I am hatching for the first time and one of my welsummer eggs has been stopped for over 5 hours. It pipped in the early hours of the morning, it's now past 11pm and it's been stuck with it's beak poking out of a fingernail sized hole for about 5 hours. Should i give it a hand? If the others don't pip on the 21st day, what should I do? How long should I wait for them. We have 3 hatched already and another is very nearly out. OH the worry!!