5mo DS is EBF. About a week ago, he started scrunching his body up and burying his face in the boob suddenly mid feed, so much so that he was suffocating himself and had to pull back and gasp air in. Now he has progressed to doing the tummy crunch, the face bury and then crying and arching his back. He's not shown any signs of reflux before, but could that be what it is? He's never been a sicky baby but did throw up a couple of times yesterday. It's awful to feel like my milk is hurting him.