Hello Doctor My baby boy of 1 and half month old is spitting / vomitting milk type after sometime of feeding formula milk , plz suggest I m worried

A. hello dear good evening if it is a little bit of curdled milk coming out that is common with the babies at this age group need not to worry but always make the baby burp after every feeding and always keep the baby in upright position for at least 20 to 30 minutes