I've got 15 eggs on day 13 and i just sat 16 new ones seeing as how they will probably be my last fertile eggs [lost my roosters]. They're in the same incubator and such. I've done this before but i lost my whole first clutch of the season. The just stopped developing, im guessing my heat spiked or something of the sort. You think these will be okay? I really can't lose these ones.