I have the same problem, to the point where my partner and me sleep in separate bedrooms, doors closed, and he still has to come in and wake me up because it's so loud!
My doctor prescribed a cortico steroid nasal spray called Nasonex (mometasone furoate monohydrate). Apparently it works by reducing swelling in the tissues in the nasal and sinus cavities.
It took a couple of days for the effects to start to show but now it works a treat and, apart from not keeping the house awake at night, I feel 100% better when I wake up in the morning.
Might be worth having a chat with you doctor and see what they recommend.