My little girl (DOB 3/12/03) only weighs 16lb 8oz. She is v. active and bright, crawling everywhere, waving bye bye, saying hello (well, thats what it sounds like to me!)but weighs less than a 6mth old - anyone else out there with this problem? She isn't a brilliant eater, but nor were the boys and they never had any problems with weight. The doctor is talking about doing blood tests this week (gulp!).