Aww, halak is really uncomfortable for baby, and I feel you! Honestly, best to have your pedia check kung ano talaga ang cause, sometimes it's just milk buildup, sometimes reflux, or something else na kailangan i-address. In the meantime, try keeping baby upright after feeding for a bit, and a few of us mums swear by doing gentle burping or positioning baby on the side; one of my friends also noticed it lessened when she adjusted how baby was latching. But yeah, pediatrician visit talaga ang best move para sure ka na okay lang baby!