Well, my husband placed 9 eggs in our homemade incubator on November 30th. We were expecting them to hatch on Sunday, December 21st. We candled every couple days until day 18 and then left them alone. All was well on day 18. We've never done this before and aren't sure what to expect. Here we are on day 22, wondering if we should open the lid and hold one up to our ear to see if we can hear something? Are they usually loud enough that you can hear them from inside the incubator if they haven't broke through the shell? Will candling them now kill them? Please help!!