Widal test is negative it is not typhoid.
It can be some kind of viral fever or some seasonal flu. Take tab dolo 650 mg
twice daily . Take lots of fluids .and take rest for 2 days. If symptoms doesn't subside than
Test for cbp,
dengue serology,
parasite for f and v
Next Steps
cbp. to check for platelet count ,hb ,and wbc count.