I had surgery in 2004 to remove a bone spur which was blocking my sinus. At that time my fibro hadn't been diagnosed. There wasn't a whole lot of pain but they do put splints in your nasal passages and that is very uncomfortable. Your head will feel congested and full and you will want to blow your nose but you can't. Like I said not alot of pain but it feels like a major head cold. Good luck and hope your surgery goes well!!