My DS started reception in Sept. He was previous fulltime in a private nursery. Since starting school, he has had 5 vomiting episodes. By this I meant, he has vomitted a small amount normally once only (i.e. half a cup max, not empty the contents if his tummy) and was otherwise perfectly fine. This happened again last night: he was sick a small amount (couple of tablespoons) and seems completely fine. No one else has been sick in our house for the last few years. I expected him to pick up a few tummy bugs from starting school, but the kids at school are generally well and it just doesnt seem like bugs. As a baby, he would vomit everytime he got the giggles...we used to literally panic when he laughed. Has anyone else experienced this? Worth a doctor trip? I will start on the probiotics, in case that helps.