Suggest Treatment For Shooting Pain In The Head

Hi...



Usually I dont worry, but for the last two months I have had a sharp stabbing shooting pain on the left side of my head everytime I breath through my nose. It only happens when I breath through my left nostril.



I wouldnt worry, but I am going away to New York in 2 weeks time for two years. Have you heard of anything like this before?



Please help



Callum