It's day 18, should I turn the eggs today or let them be until they hatch? I candled one egg that has a very thin white shell and is super easy to see through. The air bubble got bigger since last night, and it looks like a tiny bit of the chick is in on the edge of the air bubble. Does that mean it's gonna start pipping soon? It's moving around, almost in a way that makes it look like it's pushing to get out? Super excited!