We weren't planning on hatching eggs, but some of our chickens were killed so we had a friend incubate 10 eggs we had in the fridge for 3-5 days and let our broody hen hatch out 10 more laid after the incident. We were guessing none of the refrigerated ones would hatch, but 7 out of 10 did! So, my point is, they can last awhile after being laid
8 out of 10 eggs under the hen hatched! Hens do a wonderful job of taking care of everything, so just enjoy! It was extremely hot and humid when she was nesting, so we tried to keep a fan blowing. In your case, her body warmth and moisture will keep the eggs humid enough, so I wouldn't worry about that.
