Sinus Medication Solution

I have had my head ct scan results showing that I have chronic sinusitus. I am on antibiotics and it’s been 4 days since the beginning of my anti-biotics treatment. Last night I started to feel pain and swollowing in my throat. It became worst and today and now I feel as though I have a heavy flu. The symptoms are slight dizziness, muscle weakness all over body, fatigue, nasal discharge, nasal conjestion, some throat pain (since my last use of tylenol the throat pain is decreased) , and some senses of ear blockage.

My question is what exactly has happened? Is it the allergy that is causing the sympoms now, or is it the new condition of flu which I just developed?

before my anti-biotics treatment, I suffered from headaches caused by inflamation of my sinuses, but there were no signs of what I’m experiencing now.

Right now I’m on Nyquil and soon will be (hopefully) knocked out. Thanks for any help in advance.