My 2 week old baby is throwing up after nursing. when should i be concerned?

Factors: 1. If small amount, not projectile and not appear to be in discomfort - no worries 2. If large amount, yellow to green vomit, projectile or appearing to be in pain or discomfort, excess cry, blood in vomitus or stool, losing weight - see doctor.

You should: Have your pediatrician check your baby out since your baby is only two weeks old.It may not be anything major. Could just be colds, mucus in the back of the throat, still adjusting to outside life , or possible reflux.Best to have your baby checked.