Hi is it spitup or vomiting? Go check om Facebook on the La Leche League page they have a comparison of the 2..... Before you breastfeed burp the baby amd after each feeding that will help and a baby so small is stil learning to control her organs so het clept to the stomach isnt that strong yet so they more lightly to hav spitup keep her also ons a 45° degree angle for 15 minutes after each feeding... It can also be a sign of reflux of a allergy(something you eating) so keep a food diary to see what foods tends to make her vomit more