Ihave been sick with cough, fever, headaches and night sweats any idea what it might be its been going on for about a week already?

Viral Infection: Mostly likely influenza or another viral infection. We usually recommend seeing your physician if not improving within 7-10 days. In the meantime, rest, fluids, and fever control are the best treatments.

Likely the flu: Sounds like a viral process, most likely the flu. Could also be mono. Need lots of rest and hydration. If lasts more than 10 days should see a doctor.