sinusitis
"Had a very sore throat, sinus and ears completely congested, lungs and back extremely sore with a gurgling sound in every breath and continuous coughing.  Overall I felt very miserable.  I'm very reluctant to go to a doctor but finally did.  I was given the 5 day Z-pack.  I noticed feeling a lot better even after the first dose.  I wasn't expecting something to work so quickly.  Now on the 3rd day and sort of leveled out.  Not feeling better but I'm not miserable.  Still congested in my lungs but I can breath freely.  I hope this knocks it out by the 5th day."