#asktheexpert my son is 5 years old. He is very much attached to me . For some important work I had to leave him for 2 days. in these two days he vomited once and after that hadn't eaten anything. when I returned he is not leaving me even for a second and seems very lethargic. he is not even ready to go to balcony. He is still feeling like vomiting and not eating anything. what could be the reason ? please help me .