This condition you are decribing can be simple viral infection and simplly giving crocin
for few days with proper rest and hydration, it will be cured.
But, since you have told that you are in chandigarh, which is near to Delhi where these day swine flu
is going on and its presentation is also like viral flu only. The important thing to consider is that if the condition is improving and there is no further deteoretion of the condition, than chances of swine flu is less and if the condition is woresening than you must have to keep an eye and have diagnostic confirmation for swine flu.
In the mean time try to have proper rest and hydration and keep an eye on the condition, but as per your description, the condition is improving.
Thanks and take care.