my ds (7) was up during the night throwing up. today he has been the same. he seems to be able to eep small bit of food down but he cannot keep any liquids down. he has now got small red dots (about 10) down one side of his face and about 5 round his other eye in a cluster. he does seem to be feeling better in himself but still throwing up now and then. temperature is normal. is it likely just to be a tummy bug?