Is a productive cough with thick dark yellow or grey sputum in keeping w the flu? Or would it be a sign of bacterial infection. Other symptoms (headaches, body aches, fatigue, fever up to 38.7, chills but not rigors, sore throat, dry paroxysmal cough, sudden onset over hours, duration 3rd day now) sound like they could be the flu in which case i assume rest, supportive care and no antibiotics is appropriate for an otherwise healthy person with no chronic underlying problems. Kindly advise. My doctor's office doesn't have w/e coverage. Thx