Hello Doctor, I Am Sumit, 24 Yrs (Male), I Have

Hello Doctor,

I am Sumit, 24 Yrs (Male), I have been suffering from fever from past 5 days and this is not the first time I am suffering from fever... It had started happening almost every month. Just about 15-20 days before I was suffering, the doctor Mr. Rahul (Max Cure, Hospital) had suggested for blood tests and multiple tests.
I had Malaria, Diarohea, Typhoid all the tests but all came negative. Even doctor is also unable to understand the exact reason behind regular fever.
Usually i get fever with shivering and just after having tablets it won't be there. Can you please suggest what should I do ?Even i get vomiting tendency quite often when having fever.
I am using Dolo 650mg(Paracetamol), Pan 40, Monetk LC.