Oo normal yan, lalo na kung exclusive breastfeeding lang siya, ang breast milk poop and urine ay usually yellow talaga, sometimes greenish pa! One of my mum friends was so worried din about the same thing pero ang pediatrician niya assured her it's perfectly fine as long as baby's feeding well, gaining weight, at hindi dehydrated. Pero if it's a really dark yellow-orange or may strange smell, or if may other changes sa baby's poop or feeding, mas better ma-check lang ng doctor para peace of mind mo, okay?