Baby is 2 weeks old and I am breastfeeding

Br

She's was good on eating no throwing up but now she's been throwing up and it's even coming out of her nose ? I feed her for about 25, min bc then she's done and I burp even tried holding her up a little while she eats and even after . But now she's throwing up . Could I be over feeding her ? Bc then after she's done throwing up she's still seems hungry .

Possibly she has acid reflux, any tips on how to deal with that while breastfeeding?