it's normal it happens if baby sucks fast or digestion problem. if it's more often then consult a paed. apply hing or oil on naval. burp after every feed(2-3hr constant feed)

Vomit means large amount of milk or food and it comes out with force. Spit up is more like a dribble. Post a vomit the baby will appear uncomfortable but post a spit up the baby will be completely normal. If it is vomit on a regular basis then yes you should consult your doctor. If it is spit up then it is normal.

babies spitting up few times is normal. it happens because of their small immature esophagus. make sure u r burping ur baby after feeds. try to feed the baby slightly in an upright position. and keep a gap of at least 2-3 hours between feeds.and if u feel that she is doing it more often than normal please consult with ur doctor about it. no harm right.

vomiting means she's bringing up milk after feed? thats normal.