I had a polyp in one nostril and had surgery. This was years ago, in 2004. Before the surgery, I had headaches all the time and also had a lot of sinus infections and antibiotics were not effective. I did great with the surgery and was only out of work a couple of days. One of the side effects of sinus surgery is dry sinuses and boy are my sinuses dry! To manage it, I use a humidifier and Ayr nasal spray daily. Best wishes to you.