I am in week 4 of having this upper respiratory viral infection. Week 2 I was told to just rest, drink plenty of fluids, use Tylenol for the low grade fever and continue using the MucinexDM. Week 3, there was no change and I was giving a 6 day regimen of antibiotics and a cough syrup. I have completed that and really, the only change is this that I don't cough as much but I am coughing up this yellowish, green mucus. My voice is changing. I know that I am dehydrated. This is week 4. I am still sluggish.