Afraid I maybe have cancer?

At the beginning of June my sinuses went totally haywire. Along with that the right side of my neck started to hurt real bad. The neck pain was bad for a couple of days then it eased up. Then my lymph nodes went berserk and swelled up real bad. After they didn't go down for a week I went and saw a nurse practioner who put me on an antibiotic. The antibiotic got the lymph swelling to go away, however my sinuses didn't clear up at all. Another week later I went to another nurse practioner and she agreed that my sinuses were slammed shut and causing me signigicant discomfort. I know I have had seasonal allergies for most of my life but a little sudafed always cleared them up til now. Then a week ago I yawned really big and my jaw started to hurt real bad at my joint and now I can feel what can be described as a small lump by my jaw muscle. I have been unable to close my jaw properly for a week now. It also feels like the my right cheek is swollen. I have two very distinct lines on both of my cheeks that meet where my teeth come together. I have chewed tobacco for over 16 years and now I am just totally freaking out. Hopefully it is nothing major as I go see a doctor next week. Anyone got any suggestions or advice