My DS was 43 lbs at Christmas time (I weighed him because my sister asked how much he weighed and I didn't know).
Yesterday he was in my bathroom and got on the scale and told me "I weigh 398" I was like "no way" so I looked and sure enough 39.8lbs.
Should I be concerned that he lost 3 lbs since Christmas? He is normal otherwise. Just seems like an awful lot of loss for a 5 yr old