Hen start brood then stop after few hours. how long before the eggs will expire ?

[bangoman]

HI ,
one of my hens went brooding this morning , i was expecting that to happen i left the eggs few days in the cop and when its came to 14 eggs she start brooding on them. but after few hours she left them alone :-( how long the eggs will remain good for her to brood again ? shall i throw this eggs away already ?
Thanks