Today is day 21 for my egg. That is if you count the day it's laid as day one, if not then tomorrow is day 21. What am I looking for? Is my hen going to act different? Do I look under her to check the egg? I dont want to disturb her. She is actually on 3 eggs, the other two I dont know when they are going to hatch because I didnt even know she was on them, but they are good eggs. This is my first time and I dont want to kill the little one!