Thanks for writing in HCM.
The features which you have described are strongly suggestive of typhoid fever
.Continuous fever with headache is typical of typhoid. Many a times it takes time for the Widal
to come positive. No time should be wasted in starting treatment . I would suggest that you should start treatment for typhoid at the earliest before complications supervene. The other tests that should be done are viral markers for hepatitis
just to be on the safer side.
I hope this answers your querry.