Hello, my daughter is 5 years old and she is in kindergarten. Today I got a call around 12 saying she threw up after lunch. The nurse told me it's a bug going around that it lasts a day. I brought her home and she has no cold or flu like symptoms. I fed her at 3:30 so 3 hours after I picked her up because she was hungry. I gave her toast. 15 mins after not even done with her toast. She threw up again. I'm wondering does she have the stomach flu. And when can she eat and what can she eat. She's very hungry