My 4 week old DS seems to be in pain after every feed. Rarely he'll fall asleep whilst feeding, but most of the time feeds end with him pulling off and starting to scream and writhe in pain. After feeds he continues to red face scream and arch his back. He spits up constantly and projectile vomits quite impressive distances. I'm so fed up of seeing him in pain. He'll eventually fall asleep and then wake up wanting more food and I just want to cry as it'll be back to him being in pain. HV says it's not colic or reflux and that he's just greedy, drinking too much milk and throwing up what he can't keep down. He's EBF and feeds every two hours.