My neice was born august 23 and has only been breast fed since birth. she nurses well, pees and poops and i see her feed often when i am over at my sisters house. However, the big concern is that she has not gained any weight since birth and has continuosly lost weight. the pediatrican is concerned but has not said stop the breastfeeding. she has a check up this thursday, in 3 days . so is this common? i didn't breastfeed my kids but am posting this because you guys are smart. thank you. i hope i can e-mail some responses to my sister. Oh, she weighed 9.7 at birth and is now down to 9.2.