Flu or Bacterial infection. Antivirals or Antibiot
Usually cold does not go beyond a week or 10 days.
Most commonly cold is not associated with very high fever
as you had.
I suspect you may have either flu or bacterial infection.
If you have preexisting problems like allergy, asthma or other immune disorders, cold may there for more than a week.
If your symptoms getting worse than earlier, ie. shortness of breath
, severe body pain
, we can suspect flu.
For these, we recommend antiviral drugs like Tamiflu.
If we suspect a bacterial infection, we will start antibiotics like cefixime, azithromycin
Both Tamiflu and antibiotics helps in decreasing the course of illness and symptoms.
Hope this helps.
Please write back for further queries.
Wishing you good health.