I had a root canal on my last upper molar "27" if you will (last Thur). Today, I got a permanent filling on it.

This tooth is on the left side of my face.

As I write this, my left nostril is COMPLETELY plugged. When I hold my right nostril closed, I cannot breathe through my left nostril. When I hold my left nostril closed, my right nostril IS COMPLETELY, ASTONISHINGLY CLEAR.

I have no doubts that this is due to bacteria or whatever affecting my sinus emanating from a root canal that was not properly cleaned.

Can someone advise me on pulling a tooth after a root canal? I have no health issues of any kind, definitely no sinus issues, and I do not want this to become permanent - that would mean that I paid $1600 to give myself sinus issues.