I have had sinus problems since I was a teenager & I am now 38. I have had an operation about 10 years ago, which only eased the pain slightly, but as the years has been passing I have been in a a lot of pain again. I have been given antibotics, hayfever sprays, but didn't really help, I say my GP & asked to be reffered to the Ears Nose & Throat specialist again. The consultant examined me & has diagnosed that it is not sinus problems, but that my nerve endings in my nose are ultra sensitive & asked if the pain is like a migraine in my nose, I agreed & he prescribed an anti depressant drug called Amitriptyline, the prescribed amount I use is very small compared to people who use this drug for anti depressant, therefore there are no addiction or side effects. This drug relaxes the nerve endings & I think it is great, the only drawback is that I have to take every day for the rest of my life. I have been taking these for about 12-18? months now & as long as I keep taking these drugs, I am pain free.
I would suggest contacting your GP & ask for a referral if this sinus pain is persistent.