Hi I Recently Had 2 Root Canals Done 2 Days

Hi I recently had 2 root canals done 2 days ago, 1 on the right upper tooth right next to the front tooth. Everything went smoothly, once I got in the car I started sneezing and my nose would not stop running for that entire night. It's only in one nostril and when I breath in there is a pain that shoots in from the cold air I believe. My tooth is fine I feel no pain other than some soreness where the needle went in. I've had front upper teeth work done before and never had this, my nostril still runs occasionally but the breathing part is hard because I'm automatically trying not to use that nostril. I have to go back to finish the work. What do I do