my one month old baby was spit out after take feed as I burp her at least ,15-20 min after each feed

A. That’s basically due to stomach reflux which is common with most of the kids as a digestion is not proper and this is issue for initial 5 to 6 months so I’m just going to recommend you that need not worry about it it is going to be there for six months but after six days when you feed your child on demand slowly you will see that the problem is going to reduce them