When we deliver postnatal care, we advise not to be worried about your baby’s weight within the first two weeks of life. This is because your baby may lose a percentage of his birth weight due to several reasons; for example, after the birth, your baby will be passing urine, meconium, he may even vomit, hence losing fluids which will cause the weight to drop. Also, he may not be feeding much after birth and sometimes breastfeeding can take some time to establish. Therefore, it makes sense why some babies may lose a little bit of weight but after two weeks, feeding is usually established and babies begin to gain weight steadily.
It is not advisable to weigh your baby too often as this can cause unnecessary anxiety. You only need to weight frequently if there growth or feeding issues or as advised by your GP or paediatrician.