I've recently decided to incubate some eggs, they've been in my home-made incubator for 4 days now, but on the second night while i was asleep the light bulb blew and the temperature dropped to 74*f. I had to get up at 5 for work, so the light had not been off for long, will this have affected my eggs development? I'm worried that I'm incubating eggs that aren't developing, please help!!!