What could cause a three week old to vomit once per day?

Answer by  worker4589 (122)

It could be many things, like overfeeding or reflux. Since she's not showing any other signs of illness, and if she's gaining weight adequetly, you should just keep a burp rag handy. If she seems in pain, talk to your doctor about reflux.

Answer by  ChristinaRamirez (481)

When babies eat, sometimes they over eat and when they burp,the food comes back up. If its a forceful vomit then I would worry, sometimes babies can get acid reflux which can make them vomit. Having a milk allergy can make them vomit also.

Answer by  Vllad45 (1886)

This may not be vomit, but rather spit up or "Baby vomit. " This is really quite normal, and it is caused by drinking milk or formula as the baby tries to digest it along with air. Don't be worried unless it is all the food or happening seven or eight times.