What Other Options Do I Have To Resolve My Nose

What other options do I have to resolve my nose and throat symptoms of 2 years? I have constant thick mucus, sore throat (from constant throat clearing throughout the day), throat tightness from swallowing my own saliva (feels like there is a lump or something stuck somewhere, between back of nose and throat level), sometimes nasal congestion and chronic feeling of post-nasal drip...