My 4 mths old son,vomitted twice today. I have no idea what went wrong with him today. He was in a good mood n suddenly started to cry and throw up..

It could be milk reflux or indigestion. How often are you feeding him? And is he on bm or formula ? It could also be stomach virus so if he continues to vomit pls bring to see PD. I find that giving them probiotics since young helps to give them better digestion and gut health so perhaps you may want to start Baby on probiotics.