I have fluctuating nasal swelling 6 years post rhinoplasty/septoplasty. What can possibly be causing this? (Photos)

I am not over 6 years post-op and to this day I get fluctuating swelling from day to day, sometimes hour to hour. When it flares up I get a throbbing sensation in my nose and my nasal passage swells, sometimes impeding my breathing. Throughout the days my nose feels weird with persistent swelling fluctuations that get better when I am in a very cold room...any heat or spicy foods makes my nose swell. The two photos I attached are taken 1 day apart.