M has 3 bottles in evening/at night, and for all 3 he is often fairly sick when winded. We thought the bottles were taking in too much air, so we switched to Dr Brown, but it hasn't made much difference. We then thought maybe the teat was wrong (he's 8weeks and still on 1) so we swapped to 2. The sickness seems worse now, and he has also started doing it during the day when breastfed too - as soon as he is winded, he burps really severly (sounds painful) and then brings up several 'fountains' of sick. It's not projectile, but still comes up quite aggressively. It now seems to be happening every time he is fed. This doesnt't seem normal - could it be reflux? Could he be reacting to something I'v eaten? Any ideas what we can do about it?