I have a female beagle that is showing signs of labor but I am not sure she is even pregnant. I don't think she is pregnant because she has not gained any weight. Today would be the 63rd day from the last known mating that took place. I have only had this dog for 62 days but I was told they mated the day before I got them (I have a male and female). Is it possible for her to be pregnant without her belly growing? Could the puppies be up towards her rib cage?