What illness do i have? (symptoms in description)?

It started a few days ago (2-3) with a sore throat. Up to today, i have had symptoms that include: fever; scratchy, dry, sore throat; morning weakness; constant drowsiness; trouble sleeping; hot and cold flashes (i was freezing all yesterday, and woke up in a sweat); and coughing. I am a teenage male. I took nyquil for two nights to help me sleep, and motrin last night. What do i have, and how should i treat it?