I got a gerbil yesterday her name is Ginger. I got her from a petstore that obviously had no idea how to sex the gerbils. There were tanks with males and females in them. . I got Ginger from a all girl tank, but with only one left after I took her. (Might have been a boy there I don't know) And she seems just a TINY bit over average, and not just fat average. What are the signs of pregnany?