Fever from onemnth 99. 4. For me,

Fever from 40 days Widal 1:160 20 days back taken antiboitics like gudcef 200, azithromycin,moxinow,ornio o ,for 10 days then Widal 1:40 but temp pattern is same in blln 99 to 99.8 from 40 days .,during Widal o&h  160 fever pattern is same ,after 9 pm it is normal .Morning at 8am it is going to 99 ,and at afternoon it is 99.6 ,from 40 days,thyroid normal,bp normal,esr 30 ,crp 6 ,smear for mp negative,total wbc cells 12900,urine Alysis 2-3 Pus cells, calcium oxaclete crystals+++, chest x-ray clear,us abdomen normal but kidney has calyx stones of 4mm size of 2, everything is normal,what is the reason for fever fluctuations from 99 to 99.6 pls give suggestions for this ,will typhoid will cause a low grade fever after normal titre ,some doctors saying typoid  lies in body for 3 months ,I hope the doctors will give me the valuable information for me,