Ok, this is my situation. Shelby was bred 48 days ago. Her nipples are enlarged, her personality is super mushy, she carries socks everywhere mimiking them as babies. She had a decrease in appetite a good 2 weeks, and finally developed a ravinous appetite. My problem is, I took Shelby to the vet on day 44 and they took x-rays and they said no babies??? Her tummy is nice and round, and firm and definately bigger. She weighs 4lbs. 1 oz. and the stud weighs 3lbs. Shelby's mom is 4lbs. and dad is 2lbs. Could it be the puppies are so tiny, the x-ray didn't pick them up???? This is her first time being bred, please anyone, tell me what is going on??? Thank you!