mmy lo is 3.5 month old. she has done vomit 2-3 times from today morning after bf. what can be the reason ? should I need to consult doctor?

yes she may have diarrhoea or gastric pblms....if she is crying after vomiting,consider seeing a Dr...

You first have to be sure whether it's a reflux or vomit. If it's a reflux she would spit curd kind substance. Usually for that it's recommended to keep the baby in vertical position on your shoulder after every feed. Ensure burping after every feed. But if it's proper vomit you must consult your pediatrician.

If it's just milk which is curdled, plz don't worry.. In ds case u can burp the baby after every feed and hold d baby vertically for a longer time after d feed...
Incase u feel d milk isn't curdled plz speak to ur pediatrician