I am on day four. All 12 of my eggs show development which shocks me. My bator has had some serious temp fluctuations, but everything is developing. I checked yesterday and couldn't see anything so I know that this is new. Egg #6 is cracked. I didn't notice it until I candled it, but now I can see it. Should I just toss the egg or what? It looks fine other than that and is developing but I don't know if it will survive. Any advice?