Spit ups and Vomiting Question

Sully • Mommy of Darell(10) and Lelly(6)👫Married to my best friend💍💏Baby Girl due Oct '16💕From🇵🇷Living in FL🌴☀️
My baby is 3 weeks old and Im EBF. After feeds most of time she spits up and sometimes she vomits a good amount of milk maybe the size of the palm of the hand, sometimes even more than that and is very watery. Is this normal or should I be concern?