What the heck is this?! HELP! [PICS]

[Fleecy718]

So I've been incubating for a while now and have had many successful hatches (ducklings) and 12 eggs were due to go into lockdown today and 2 of them had black spots on them!! What is this??

I candled them and one, I can't see anything. But the other one looks like the duckling is trying to pip right there!! AHHHH, I'm freaking out!

[/IMG][/IMG]

 

[Silkies~Polishes]

I think i saw someone else post on here about that yesterday or something and people were saying that the egg may have just changed color. I have never seen this before but if there' a live chick in there it probably not a bad egg or anything that will explode.