Why my LO everytime will have flash red face, clench fist and leg bend to his tummy making alot of sound like very uncomfortable. He keep being hungry and whenever I try to put him down he vomitted the milk and then ask for milk again. I don't know is it growth spout or colic. Seeing him feeling this way make me heart pain. He didn't manage to sleep well too. He is just 3 weeks going to 4 weeks.