kindly consult pedia to assess. halak sia, its either due to plema or milk. sa anak ko, we experienced halak pero no plema/no coughing/walang sipon. pedia checked at wala namang narinig sa lungs nia. kaya burp si baby after feeding. upright si baby for atleast 30 minutes. avoid overfeeding. eventually, nawala ang halak ng anak ko.