I'm feeding my daughter, she's throwing up everything, I think I fed h…

I'm feeding my daughter, she's throwing up everything, I think I fed her too much. If she falls asleep, she will fall asleep, if not, she definitely puts her hands in her mouth and sucks like a pacifier. I understand that she should be able to do this now. Now the question is simply such reflex/skill or is she hungry anyway? ??