Hi Welcome to the HCM The symptoms in your child seems to be more of lactose intolerance rather than cow milk allergy. Lactose intolerance is triggered by the lactose sugar in cow’s milk. In people with lactose intolerance, the digestive system can’t fully digest this milk sugar, because it doesn’t make enough of the lactase enzyme. So instead of being digested and absorbed, the lactose stays in the gut and feeds the gut bacteria, which release acids and gases that cause the symptoms of lactose intolerance. Sometimes even high carbohydrate diet may lead to similar symptoms. As most of the cases of lactose intolerance are temperory, I would recommend you to give your child a well balanced diet without milk and excess carbohydrates for the time being. You may gradually introduce milk after a week. Also, probiotics such as enterogermina will be useful. Hopefully this will be helpful. I will be happy to answer any further questions. Take care