Ay, normal lang yan usually, mama! A lot of newborns grunt and make those little sounds, parang they're adjusting pa lang sa world, kaya don't worry kung walang problema like nasal congestion or crying. That said, since baby is only 1 week old and you want to be sure everything's okay, mas magpaginhawa ang loob mo kung i-mention mo lang ito sa pediatrician during your next check-up, lalo na kung umakyat na sya in frequency or pareho lang na parang uncomfortable sya, better safe than sorry with newborns talaga!