Nose blocked after rhinoplasty. What would be the solution for this?

I had my rhinoplasty overseas back in August 2019, I'm a mouth breather and I had my deviated septum fixed but I feel like my nostrils are constantly lightly blocked. I have to blow out to unblock but even when I try blowing out each nostril, it still feels hard to blow through. There's no smooth airflow going through. And when I try just breathing through my nostrils my lungs feel heavy and it feels very uncomfortable. What would be the solution for this?