Newborn choking

CJ

My son is a day old and lately he has been spitting up and nearly choking, but he Is only being breastfed. I am absolutely terrified to lay him down and go to sleep because I’m afraid he is going to spit up and choke without me knowing. I’ve asked my nurses what I can do, but they really only say to prop his bassinet up. I’m so nervous to sleep without being sure he’s safe. Anyone have any advice for this?