It’s common to lose 5-7 percent of your body weight in the first 3-4 days following birth. By two weeks, the majority of newborns will have regained their birthweight.
In general, a newborn will gain about an ounce every day until he reaches his birthweight.
As a result, it will take nearly two days for a newborn to grow the same amount of weight as a medium-sized egg.
How long did your baby take to regain his birthweight?