Ds (3) was sick in the night on Wednesday night but it was after a long bout of coughing and I though that was the cause. On Thursday he was fine in the morning, ate a normal breakfast and normal snacks mid-morning. At lunch time when his dinner was out in front of him he threw up big time, absolutely loads of it. He didn't feel sick before and was absolutely fine straight after. He had some toast at tea and it stayed down. On Friday he ate a normal breakfast but wasn't very hungry through out the day so had little and often. He was fine. Today he has been our normal smiley boy, if a little tired. He has had normal meals all day and eaten well. At teatime tonight half way through his tea he declared he didn't feel well and then was very, very sick everywhere again. Once again, he is bouncing around striaght after. What is this all about and does anyone have any idea what I should do about it?