What You Need To Know About Your Newborn’s Stomach Size

When your baby is born, their stomach is the smallest it will be for their entire life! In fact, their stomach will slowly stretch over the first couple weeks of breastfeeding.

Still, you may feel like your breasts aren’t producing a lot of milk. Or, you may feel like that your baby isn’t getting enough milk in the first few days after birth. Truth be told, you’re not alone. But don’t worry! 

Related: “4 Signs Your Baby Is Hungry (& Needs To Be Fed)!”

Below is exactly what you need to know about your newborn’s stomach size

When born, your baby's stomach is the size of a marble Day 1

At first, your baby’s stomach can hold about a teaspoon of breast milk or about the size of a large marble.

This is when your breasts produce a very small amount of colostrum – a golden substance, concentrated with the perfect nutrition to be your baby’s first meals.

At 3 days old, your baby's stomach is the size of a ping pong.Day 3

A few days in, your baby’s stomach will be able to hold about an ounce of breast milk or about the size of a ping-pong ball.

The amount of milk you make is increasing as your baby’s tummy grows and the milk begins to transition to mature milk.

At 10 days old, your baby's stomach is the size of an egg.

Day 10

Your baby’s stomach will be able to hold approximately 2 ounces of breast milk or about the size of a small egg.

By this time, your milk will be at full volume and fully transitioned from colostrum to mature milk.

 

Related: “6 Steps For Getting a Comfortable & Effective Breastfeeding Latch”

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