My daughter is 15 months old and always did everything early. She's developed perfectly. Walked early. She started solids very early. She eats well. A snack in the morning, two breakfasts, two snacks, lunch, two snacks, dinner, snack. She eats ALL day. She's been underweight her whole life though. At this months appointment, she'd lost a pound and grown two inches in a week. I was told she's now malnourished and had to go for blood work and a urinalysis.

I don't understand. She eats more than I do and doesn't have many dirty diapers, but only weighs 17 lbs! Anyone with a similar experience? I'm scared and her doctor won't tell me anything.