I cannot keep food in my baby! I feed her a bottle no matter how much she's had she's constantly…

I cannot keep food in my baby! I feed her a bottle no matter how much she's had she's constantly sucking on her hands and gagging herself so badly she throws up an entire 6 oz bottle.. We use to have only 4-5 bottles a day we're now up to about 9-10 because she makes herself throw up and then she's hungry again..