Female Rabbits . . . ?

I have always had male Rabbits , However I brought a Female from a private seller and she obviously was'nt treated that great as she was kept in a small hutch all day and never handled. Now she is with me she has full run of the garden and im trying to get her used to people. I have bonded he with another female in which they share a double cage, they never fight but some of her fur is in the corner of her bedroom. I have tried to feel if she is pregnant but im wondering if all female rabbits have teets or do they develop when they are pregnant. It might seem like a strange question but having only males before I never noticed them on her before!!