Adoi, gagging tu memang common lah kat newborn terutama after feeding, bisa jadi dia punya sucking reflex lagi strong or dia minum terlalu cepat/banyak sangat. A few of us tried positioning baby more upright after feeds and burping dia elok-elok, membantu quite a bit. Tapi kalau dia gagging frequently or macam ada discomfort, better check dengan pediatrician you to make sure semua okay, sebab sometimes baby boleh punya reflux juga. How's dia weight gain and activity level macam mana overall?