I have a broody RIR hen and allowed her to sit on 8 eggs. 2 weeks later, I came out to check on her as I do every day and found 1 egg shell broken and in pieces and the egg missing and the other was nicely rolled out of her brooder box nest. When we did research (told it was probably a bad egg) we cracked it open only to find the eyes had formed but nothing else. Yesterday (which was supposed to be "hatching day") I found another egg missing now leaving me with 5. Still no chics...should I be getting nervous??