Alam ko yan, nakakaalarm talaga pag may ganyang tunog! Siguro normal lang siya lalo na pag newborn pa lang, pero para sa peace of mind mo talaga, better check with your pedia just to be sure, baka may slight congestion lang o normal infant reflexes, pero mas better if doc checks. A few of us moms nag-worry din with our babies' sounds at the end of the day, reassurance from the doctor really helps, kaya go na lang!