Netti pot with sea salt for rinsing the sinuses. It takes a bit of time to master, but really helps. Recommended by many of the top Allergists in the US.
Salt water nasal spray increases the moisture to help remove the allergens and liquify the drainage.
Hang out in the steamy bathroom for 20 minutes or take a hot shower.
Increase the amount of water you drink to hydrate from the inside out.
Face down on a heating pad. The position encourages drainage. The heat increases bloodflow to the area to carry away bacteria.
Ibuprofen, acetaminophen or other NSAIDs that you can take will also help with comfort.
Good luck from a fellow sufferer whose prescription medication is equal to 10 original Sudafed tabs.