My son Oliver is almost 4 months old and fully breastfed. He has never been a big chucker, just the odd curdy posset every now and then. But for the last week he has been doing frequent spews, some of them projectile. This morning he fed in bed from both breasts, projectile chundered all over the bed, then promptly fell asleep. Most of his spews have been clear, no curds. We have a family history of reflux - I had it badly as a baby, hubby still has it - but I would have thought it would have presented before now. Its it unusual for a baby to suddenly start vomiting? There have been no other symptoms of illness I can see and he is his usual self.