My baby girl's birth weight is 3.2kg. Now she is 3.7kg in 29 days... Is the weight gain normal or she is underweight..?

A. A child gain about 500 g in the time of 30 days your child has already gained about 500 g in 29 days so it’s a healthy that means your child is growing up and gaining weight properly as the minimum amount of weight should be there with progressing age