Baby throwing up a lot

M💙N🌻

I’ve tried 2 type of formula and he still throws up regular enfamil and enfamil for sensitive babies, he even threw up some of my breast milk that I pumped. Is this normal? He has a doctor appointment until Friday. Idk what to do anymore ? I make sure to burp him and not lay him down right away. He gets hungry every hour. He’s 1 week old.