Alamak, jangan worry lah, poop colour yang macam peanut butter tu actually normal untuk baby yang mixed feeding (BF + FM)! Sebab formula milk boleh buat stool jadi darker and thicker compared to purely breastfed babies. The smell pun akan lebih kuat sikit once they're on formula, tu memang expected lang. Tapi kalau ada signs lain macam baby seems uncomfortable, ada constipation, or the colour suddenly berubah drastically to green or very pale, then better check with your paediatrician k. Otherwise, you're doing fine, mama!