1 month old vomit like merlion

Does your 1 month old boy vomit like merlion? I experience it yesterday. He used to drink 90ml and it been fine and normal for the past one week or so. But only yesterday, after each feeding, my boy vomitted everything out like merlion for almost 5 times and making me worried. He pooped twice (once diluted, 2nd normal) at night. So far he has stopped vomitted after the 5th time. Did your baby go through such instances before? What did u do to calm your baby down? #firstbaby #advicepls