My son is now 8 months and for the past 1 month, he has been vomiting (alot) or spitting-up (1oz) once or twice a day every few days. He never used to do this when he was younger and I haven't really increased his milk significantly since 6 months....maybe from 5 to 6oz. But anyway, he vomits and spits-up not only after large feeds but also after small feeds. Has anyone has this happen all of the sudden when the baby is older?