im pretty sure my mouse is pregnant, i just recently bought her and another female mouse. but i think she mated with another male mouse in which she was housed with previously. her belly feels big and round, and she continuously makes nests in her cage.

my question is, how do i take care of these baby mice when they are born? im sure their mother will be just fine and take very good care of them on her own. but i want to know what i should do as their owner, how can i help?