XP: 1 yr old vomit help ???

april062604

dylan (12 months adjusted 15.5 actual) for the past 2 nights has thrown up when he goes to bed. he was on 70% whole milk and 30% alimentum for the past 2 months and yesterday we switched to 100% whole milk bottles. he's fine all day...and after his 7pm bottle we put him down, he screams for a few minutes and pukes. we go in, have to wake cassidy b/c of the drama of pj changing and sheet changing. last night we re-fed him his bottle, put him down again, he puked again, we changed everything again and then he went to bed. tonight...bottle....bed...puke...change...no re-feed...bed...scream for a minute or 2...then asleep. he's never had a problem with whole milk, cheese, or yogurt, he has no issue during the day either. what is it? so annoying. sorry so long.