It has happened twice now, but sometimes, I will feel slight pressure in two of my left upper teeth and a funny feeling in the top left half of my lip before it goes numb. I am not sure what the cause may be, but the only thing I can possibly attribute it to is that my sinuses may be swollen because I realized that it usually happens 10-15 minutes after I blow my nose. Usually, the numbness goes away when I turn my head onto my left side and put a hot water bottle on it. While I do this, however, my left ear slowly begins to have a pain inside, and just before the numbness and pain go away, my nose makes sounds as if air is entering through them. Is there a name for any of this or a treatment I should seek from my doctor?