Congestion after Submucous Resection SMR Surgery for a mild deviated septum

I had Submucous Resection SMR Surgery for my mild deviated septum 5 days ago but I am really congested. I wake up in the middle of the night out of breathe. My doctor gave me Xylo-COMOD and Ocean Spray to use as much as I want per day for two weeks which is when he said the congestion will get better. I am using the spray every 4-6 hours but worried that I might be addicted to it after two weeks and never breathe without using it. Is this safe to do and when will the congestion get better?