spitting up a lot

Brooke • 12/10/2017 Anthony💙 10/11/2020 Cecilia💖

My son is a month old and this week he just started spitting up everytime he ate. the past 2 days he's been spitting up a lot like it seems like his whole meal came up. I'm scared he's not eating enough, but everytime I try to offer him my boob after it he doesn't want it. Has anyone gone through this?