Normal lang yan, mama, babies na ganitong edad nag-produce ng lots ng mucus pa lang, lalo na kung kanina lang sila born, kaya sometimes heavy ang lungad kahit walang sakit talaga. Pero since hindi consistent at walang fever or difficulty breathing, likely okay lang, though best na i-mention mo pa rin sa pediatrician sa next check-up just to be safe, lalo na kung babago ang pattern or may ibang symptoms na sumunod. Hindi kami mag-aalarm agad, pero better safe talaga with newborns.