I started with 3 eggs under my broody, one got smashed on day 3 and the other on day13. Now I only have one left and its on day 15. I am hoping and prayng this one will hatch but it doesn't look so good, the air sack is loose. How likely is it that this egg will hatch? If it does hatch Can I let the broody raise it even though its a only child chick? I REALLY want a baby chick and am so worried!