I was hoping someone could give me a suggestion. I have always suffered from allergies. I have been to two allergists in the past three years and nothing comes up in the tests..negative results (apparently its rare but does happen).I do not know what I am allergic to anymore. It seems like in the past couple of years I have developed sinus problems. When I get a cold it proceeds to my sinuses. I have an ionizer in the bedroom and a humidifier (which seems to help a little). I had a cold 3 weeks ago and my sinuses are still bothering me. I dont think its an infection because it comes and goes, no coloured mucous just stuffy nose and on and off post nasal drip. I live in a country with extreme cold winters (which is happening right now) and my sinuses have never been worse. I bought an neti pot and have been doing my nasal irrigations every morning and night (temporary relief). My ears are also a little blocked. I know the sinus problem is hereditary however, I dont even know if my sinuses are triggered by allergies anymore!! Anybody have any other suggestions on how to maybe stop the post nasal drip for good. I also bought eucalyptus oil to add to boiling water and I try inhaling the steam. I dont want to take antibiotics for no good reason.