Symptomless fever. Falls between 99.

It started with ..slight body ache and stiffness on 11/9/2020 and it persisted for a few days ...body ache vanished on 13/9/2020 followed by loose motions ....... homeopathic medicine as prescribed were taken .which proved to work for body ache  . But the fever has not gone down even as of yet ... there's no such symptoms just low grade fever.......which falls between 99.4 and 99.8 , that to during the evening . Blood test has been performed stating everything to be normal ... With just slight increase in WBC count ...even urine  test proved to be normal ...even after repeated consultation from a nearby homeopathic hospital ...the actual problem is not yet diagnosed ...it's been over twelve days now ...with persisting low grade fever Following is the report for the blood test done BILI: Negative [Negative] RBC: Negative [Negative] LEUCO: 2-3 [Nil] RBCS: Nil [Nil] CAST: Nil [Nil] QBC: M.P. not detected. kindly guide what exactly can be the issue