Hi I'm new to this . My Peggy layed 3 eggs in December had them In incubator ever since I cannot see nothin happening yet 1 of them bust it hadent gone rotten . Is it true not to throw eggs away until thay go rotten. She's now layed 2 more but don't no wen I just found as I was puttin water into there soil for humidity. At wat stage do I shine a light into them see if thay are fertile or not