ok so my niece came down to see me for a week.and she had a runny nose and cough well now my…

ok so my niece came down to see me for a week.and she had a runny nose and cough well now my daughter has been having the same stuff and her boogers were green and couldn't call the doc since it happened over the holidays(I've cleaned her nose with the nose cleaner I got from the hospital and have given her some baby cough meds and baby nose meds) but now it is running clear on her nose and the cough isn't there and today she has not been active at all she only woke up enough to eat and she went right back to sleep what should I do