The symptoms as mentioned in your post indicates the possibility of a viral fever
This has to be managed symptomatically.
So, the medications as prescribed by your doctor are correct.
Please continue them as advised.
However, if there is no relief, it is better to get blood tests done to rule out any infective cause.
Investigations like complete blood count
, specific tests to detect malaria
will be helpful.
Till then, maintain adequate hydration, proper nutrition & take good rest.
There is no need to worry, you will be fine.