Oy, mama, this needs a doctor's check talaga, please call your pediatrician or go to the clinic soon, kahit ngayon pa lang if you can! Three days without poop at 2 weeks old is something they need to see, para ma-check kung kumakain ng sapat ang baby at lahat ay okay. A few of us moms had similar worries, and the doc always said it's better to check than worry, kaya don't hesitate ha! Keep me posted, rooting for your little one.