Hi, I ve been smoking for 20 years. Im36 now. Im 6 feet, 155 pounds. I struggle with quitting a lot, so believe me I know I need to. However, as of a month ago my throat starts to swell in the back. If I stop for a day it goes away. I m just wondering if this is a new allergy or something far more serious. It definitely is curbing my cigarette consumption but should I see a doctor? Could this be cancerous. Like I said it s fine if I don t smoke. Thanks.