My almost 1 month old started with a runny phlegm’s nose today with a slight cough here and there. He feels a little warm but every time I’ve checked his temp under his arm it’s always 97.6. We have been sucking his nose and we plan on using the humidifier tonight. Should we be concerned and call the on call dr or is there something more we can do at home? He’s having plenty of wet diapers and eating just fine. He’s a little fussy but mainly just sleeping a bunch today.