Question: I contracted a throat infection on Sep 10th and subsequently a fever that took 6 days to subside. For the first 2 days, I took paracetamol 500mg every 8 hours because the fever was around 100 every 8 hours after I took medicine. And I had bad body aches, esp. upper back pain where I couldn't sit without my back resting against a support for 5 mins. Third day I got myself tested for Dengue (because I had developed some rashes on my back) and Typhoid which were both negative. So, I continued to take paracetamol 500mg every 8 hours, got another platelet count which was ok and I was fine after 6 days. Though fever was gone but back pain continued for another week.
Anyway now on Oct 7th, I again contracted a fever which was again around 100 and lasted 3 days and again with the back pain and body aches.

So, I would like to know if this fever can be a symptom for any underlying cause and if I should go for any specific investigations instead.