3 week old gagging

Adele

So I’m a FTM and wondering if anybody else has experienced this, my 3 week old baby is breastfed and is a good eater but hours after she eats she will start gagging and almost choking like there’s something in the back of her throat. It scares me every time and makes me nervous that she aspirated some milk or something. Should I be worried or is this common?