Baby spit up: how much is normal?
Spit up is normal usually with a burp a little amount comes out after feeding. When your baby feeds they take in air along with their breast milk or formula, the air gets trapped in with the liquid. The air has to come up and when it does, some of the liquid comes up too.
If you're breastfeeding, ask your doctor if there's something in your diet that may be making your baby spit up more (sometimes cow's milk is the culprit).
If your baby's taking formula or expressed breast milk from a bottle, make sure the hole in the nipple isn't too small, which will frustrate your baby and make them swallow air.
Vomiting is usually more forceful and of greater quantity than if your baby is just spitting up some of his latest meal. If your baby seems distressed, he's probably vomiting. Spitting up doesn't faze most babies at all.