These tips may help babies with reflux: Talk with your baby's healthcare provider if he or she is fussier than usual or the vomiting seems worse.
Also check with the healthcare provider if your baby has problems breathing during or after feedings, has choking spells, or refuses feedings.
In breastfed or formula-fed babies, a physical condition that prevents normal digestion may cause vomiting. Reflux happens when stomach contents back up into the esophagus (the tube that connects the mouth to the stomach).
Talk with your baby's healthcare provider right away if your baby is: Some babies may constantly spit up all or most of every feeding. The esophagus can become raw and irritated by the stomach contents.
The first bowel movement of a newborn is called meconium.