Immediately get your blood checked for
malaria and dengue. You may require
typhoid testing after a week of 1st fever appearance because test is usually negetive in first 7days. If it is malaria then the only cure for you is specific malaria medicines. Nothing else will save you in the world.
But other some other diseases may be treated with latest antibiotics course for 5 days.
You definately need these tests in order to prevent you from becoming extremely ill - Complete blood counts, urine microscopy,
serum creatinine and liver function tests for jaundice/
hepatitis.
If you areelderly/Have a weak body then
blood culture test and urine culture tests are advised as we must know exaclty which microorganism caused this fever.
Other possibilities are some abcess inside your body.
If it is viral infection then it will diasppear in a week or a so.
But whatever the case , you must treat this fever as a sign of dangerous infection and take quick action with your nearest doctor with good testing facilities.