Should I feed him more when this happens or wait. She is a Board Certified Lactation Consultant, as well as a retired La Leche League Leader. It is very common for young babies to spit up part of their feed. Your baby may simply be spitting up the milk he doesn't need. Or he may have a bubble, and when he brings it up, some of the milk he has taken in comes along with it.
Some young babies spit up if they are bounced around even a bit just following a feed.
Typically the amount of milk your baby spits up looks like more than it actually is. If your baby is still interested in nursing after he spits up, it is fine to put him back to your breast. Remember, crying is a late sign of hunger. Newborns need to be nursed at least 10 to 12 times a day. Your little one may be more likely to gulp down his meal - and then spit up part of it.