Ay, constipation sa baby is really worrying, mama! Two days without poop, especially kung may gasses lang, you should really check with your pediatrician kasi it could be the formula not suiting baby, or dehydration, or something na kailangan ma-address agad. A few of us moms had this din, one friend's baby needed formula change, and another one's baby needed more water intake between feeds, pero definitely better na i-confirm ng doctor kung ano ang issue bago mag-adjust pa. Huwag mag-worry too much pero don't wait long, okay? Let me know what the pedia says!