my son was severely sick. he had fever for 5 days alongwith cold,cough and vomitting. There was no fever on 6th day but coughing continues especially when he does any physical activity.After this episode he has stopped eating completely whereas he ate properly before getting sick.His food intake has reduced to almost zero.And he started breastfeeding and sleeps. What to do to regain his appetite and to stop his coughing?