Ay, common ito sa newborns pero better check with your pedia talaga para ma-rule out kung heat rash lang, baby acne, or something else na kailangan ng specific treatment! A few of us moms in our circle had the same concern, at parang different causes pala bawat baby, one friend's baby got it from too many layers of clothing, tapos isa naman ay contact dermatitis from detergent, so kailangan talaga ng doc to assess properly. In the meantime, keep the area clean and dry, at avoid overheating kung possible, pero please don't wait, 1 week old pa lang ang baby mo, mas safe na magpa-check agad! Hoping it's just something minor lang.