Welcome to HCM
First of all I would like to know the duration of fever
because the test for diagnosis typhoid
is depends on the duration.In first week blood culture
should be done and in second week Widal
test(you have done)may be done.Though widal test is nonspecific test but it can be helpful to detect typhoid when it is done after 2nd week of fever and repeated again wit increasing titre(i.e-1:80 to 1:160).I also want to inform you that typhoid has no such stage its a water born bacterial disease and treatment is easier when diagnosed properly.
Please visit your doctor for further management.