So my son has been sick since the Jan 27th almost making it 2 weeks. First couple of days he had a fever its gone down now since. But my only issue now is that his nose is always stuffy and congested. I've tried everything... Hot steam in the bathroom, keeping humidifier in room on, nasal saline spray, elevating his head and its still not going away. I'm stressed I'm sad.. It's affecting his sleep please what should I do!