Today I pumped so my husband could feed our newborn tonight. After she ate she spit up 3 different times. She then was still hungry so I gave her the nipple. She took a little then spit up some more. Not a lot tho. Since the gift just been rocking her. At night when she wakes up I purely breastfeed. Is the spit up normal tho? I tried her with some formula today over 8 hours ago and she took it fine. Could it be a result of that?