I have been experiencing what feels like a severe sinus infection since October of 2013. I went to the doctor several times and have been told that I show no signs of an infection, though I have gotten sinus infections every winter for a long time. I have been prescribed sinus infection medicine, none of which made any difference. I recently had an allergy test done. The allergist told me to use a nedi not, mucinex, and saline nasal spray. Not only do I not feel any better, but I feel worse than I did before doing those treatments. The pain is becoming unbearable and is interfering with my daily activities. Do you have any idea what may be causing this?