I had endoscopic sinus surgery and septoplasty 10 days all was going smoothly until 3 days ago.

I began waking up feeling very dizzy and nauseous. I also had a low-grade fever and some green discharge from my right nostril. I contacted my ENT who didn't seem too concerned about the symptoms. He said I was already on an antibiotic and I should increase my saline flushes and take Advil for pain. I have done that but my nausea and dizziness is not any better I'm finding it very hard to make it through the day. Is there anything I can do to help with the dizziness. Thank you.