Hi,
Welcome to the forum.
The symptoms that you have described suggest that the
sinus infection has spread to nasal cavities, ears and throat as all these structures are interconnected.
You need to get a pus culture done in case there is pus discharge to know the organism causing the infection.
I you are not responding to the antibiotics that you taking, then you should change it.
I hope this information has been both informative and helpful for you.
Regards.