My poor baby is sick

My little guy started with dry cough mid week after my 3 year old nephew gave him his cold I assume. It's now wet cough and he has some mild retractions and fever. I have him Tylenol and I'm using my humidifier but I'm praying I don't need to go to the ER. Taking turns watching him tonight and re-evaluating in the am. Please say some prayers it's viral and he gets better ASAP:) thanks all! Xx