I have a few silkie eggs in my incubator...my first hatch! Anyway, they've only been in the bator for 2 days, but this morning when I turned them, on 2 of the eggs I noticed some small "pore" spots. They're on the small end of the eggs. These 2 eggs are white, and the remaining eggs are very light brown (there's not any spots on the brown eggs). Should I be worried? I know it's too early to do anything, but what exactly are these spots?