Last week I took DD to the pediatrician because she had been projectile vomiting for a week. They weighed her (naked, immediately following a poop) and she came in at 14.75 lbs. She had weighed 15lbs in a diaper at another doctor over a month before that, and when I weighed her by holding her in my arms on the bathroom scale then subtracting my weight I was getting 15.6 lbs the week before the doctor read 14.75. The doctor chalked it up to "difference between scales" that her weight was less than what it was a month ago. I'm skeptical. I think she was that dehydrated because she was barely eating for a week. Have you noticed a huge difference between scales? Now that she is eating normally I'm reading 16 lbs at home.