I make sure I prop Ryan on his side a little, not sure what they are called but I have those things that hold them in plce, like a big sausage either side of him. It makes his head lay on it's side a bit if he does spew then he wriggles himself to a on back position eventually. He's not on his side much only enough to ensure his head is to one side for about 15minutes . I found sitting him a lot more upright for feeds helps a lot. Definately ask they just wanted me to rule out anything phsyiological he didn't tell me what it could have been though. I lay him on his tummy for a little bit after each meal till he burps a few times on a matress protector I have on the single bed in his room before moving him to his cot. He's on it next to me at the moment burping and farting away lol