Girls... Son is 1 year and 9 months old. Since yesterday (after lunch …

Girls... Son is 1 year and 9 months old. Since yesterday (after lunch nap), he's been vomiting almost every hour, even at night there was vomiting, today in the morning again. There's no diarrhea, slightly elevated temperature. Today in the morning after vomiting, he sleeps, and generally lethargic, sleepy. Called emergency services, they said "this isn't for us, call a pediatrician", now a mother-in-law will come and we'll go to the children's hospital, meanwhile I want to know, has anyone had this before? What did you do?