What Causes Mild Fever With Severe Joints Stiffness?

In2009 I had mild fever for3 months,wt losd10kg. tireness like TB/. Esr-- 90/ CRP( + ). /ANA( +,) In last ,I had severe joints stiffness. 1---Dr Chandrasekhar at bangalore, suspected CTD ,gave Neprocin tab250 mg+HCQ 400. .Neprocin stopped soon HCQ200 continued 2.5 yrs.So I became Ok , fever was ok in 2 days. 2--Recently, I had Viral fever2.9.16 to 11.9.16, since then I hav low fever. On 23.9.16 Esr= 65/ ,CRP +6.5 , ANA (-).NO LOSS of appetite,no wt loss.My Dr, MD, says,. no ANA, Esr is not a big problem in old age, It is post viral ARTHE LEGIA,Take Dolo 65 , O.D ,attend is fix,. 98° --7am 99•5 10 pm.No cold no cough, no UTD, What to for mild fever.