My son was not eating food these days and spitting the food what to do

A. check if it because of digestive issue as gas indigestion colic constipation issue.. you can give Himalaya bonnison as it helps treating digestive issue, and also increase appetite.. it could be because of teething.. start with calc phosphorus a homeopathy medicine for teething, calc phosphorus helps in easing teething effects as teething fever loose motion green stool..