Regarding temp variations. Negative,

What causes temp fluctuations 98.2 to 99.8 from it is showing like this from april earlier normal,in April thypoid o&h1:160 fever pattern same ,taken antiboitics for 14 days then widal reduced during that esr 31,crp 6 after taking doxt-xl esr 10 ,crp 6,smear mp neg,scrub thypus neg,thyroid normal,us abd normal,chest x-rayclear,blood culture neg,in junevisited 5 md gen doctors said. That no need to worry fever is taken as 100,again in July 10 went to other place then throat pain caused ,wbc9900,plat 1.92lks,esr30,crp12.6,taken doxt-xl for 3 days then wbc 10050,esr30,crp3,plat 2.1lks,what is the reason behind these fluctuations appetite is good ,pls tell what is reason for this don't keep answer as chat now or any other we know but asking for better reply from doctors,during the thypoid and after the thypoid the temp pattern is same will thypoid is present in gall bladder and that produce this temp fluctuations ,my temp fluctuate betwn 98.1-99.8 earlier blood culture negative,