We think our dog is pregnant. We took her to the vet but they felt it was too early to tell. We tried to breed her before but she didn't take. She showed all the signs before and the vet called it a "false pregnancy". This time, she is getting much bigger and her nipple are getting milk sacs. We are taking her back to the vet in a few weeks, however, in the mean time, we are just trying to look for other signs. Can anyone help?