My daughter won't stop eating!

Victoria
My daughter is 14 weeks (15 weeks on friday) she will gulp down a 4oz bottle, than like an hour - a hour an a half later she's screaming for more food. So I feed her again, than she pukes it all up. I've tried just giving her 1-2oz when she wants to eat an hour after her big feed but she still cries for more...not sure why she is doing this