Does anyone have experience of this? My daughter is heading into day 6 tomorrow of being positive and she seems better and snot is drying up but, her cough at night is quite bad. During the day it's generally OK and she coughs but not that much, when she goes to bed though it starts and she coughs a lot. Is this something to be worried about? I've thought about buying a child spo2 monitor to see if her oxygen is OK?