OK I've looked everywhere i found one post on here. Two of my eggs have these black spots inside them. I candled last night and they are definitely moving inside. I want to know why it's there if Soemthing I did I can correct it for next time. I did lightly wipe eggs they were pretty dirty. It's moving so I'm confused I found one picture online that shows something similar and it would be late death but it's not dead or yet anyway. I'm on day 23. Hope someone know, thanks!!