2.5 week old throwing up after feeding

My baby is 2.5 weeks old and has been throwing up quite a bit, sometimes more than once, after each feeding for the past few feedings or 8 hours. I know it's normal for them to throw up, but he throws up quite a bit immediately after I un latch him from my breast, before I even have a chance to burp him. Even if I do burp him he still throws up quite a bit and usually more than once. I'm just worried that he is throwing up everything he just ate. He does still show hunger cues and when I have fed him again after throwing up, he throws up again. This just started happening today, normally he would burp and throw up a little or sometimes not throw up at all. Should I be worried or is this normal? I plan on calling his dr when they open but would still like to hear from other moms