hello and welcome to HCM ,
You seem to be suffering from an acute episode of sinusitis
. This is an infection of the sinuses
and is usually treated like any other infection of the respiratory tract
Since a course of antibiotics has already been started with pain killer and antihistamine combination (sinarest
) all you need to do is wait and watch for one or two more days.
If the symptoms persists or they become worse you need to consult your ENT who may suggest a stronger medication and / or injection.
meanwhile take only warm fluids and do steam inhalation
Dr Sriram Nathan