I Got Viral Infection In Sept (in Agra). I Was

I got Viral infection in Sept (in Agra). I was treated with heavy antibiotics and felt Ok within 2~3 days. However, after 1 week, my body seems to have Reactive Arthritis. I am having moving pain, which means, its sometimes in the back, sometimes in the ankles, toes, and knee joints.
If I take 1 tab of Arcoxia, I am Ok for next 2~3 days.
Please suggest me something for this.