My eggs went into lock down on Sunday on day 18. They were all wobbling days 18 and 19. Now is day 21 and i don't see them moving and I'm worried. I can, however, hear some faint chirping so i know at least one is alive. I suspect it's coming from egg number 2, which has been the most active egg, but it's not moving much now either. Is that normal? Should i be worried? None of my eggs have pipped yet.