Okay, so I went back and calculated and she SHOULD be 7 weeks pregnant if you start keeping track off the same exact day they mated. Is that how it works or are you supposed to wait a few days? If not, then I dunno why shes not bigger. Her nipples are sticking out more and definitely pink, but her body hasn't really gotten any bigger. I don't get it. Is it possible for smaller litters to not cause her to expand as much or something maybe?