My daughter is 1 month and 21 days old and she has started vomiting after breastfeeding, why is this happening?

A. Hello mom a little bit of vomit is normal to occur, and that occurs due to reflux action , but if the feed as the whole she is been fed then that indicates that their is an indigestion issue. so you have to take care of your diet , and prefer to take easy to digest foods. also elevate the baby head a little while feeding as that would ensure good flow of the feed and make sure the baby is burped well after every feed,