My female mouse mated with my male mouse and has looked pregnant for a while. She has always been a small mouse (I don't know why) but she does look bigger than normal so I'm pretty sure she's pregnant.
Today I checked on her and she looks smaller than yesterday. I'm scared to lift up their nesting box because I think she may have already had the babies. I've read that if you disturb them, the mother can eat her pinkies so I don't want to check. Also I'm pretty sure it hasn't been 21 days yet (usually when the mice give birth after breeding). I've also read that you can handle the babies after 5 days after birth so maybe I should check them then. What do you think I should do? :?