Hi I had a cold 3 weeks ago, that has gone now, and now still have an annoying cough. I am producing a lot of pflegm and my neck feels swollen. At first I thought this was normal as I have had swollen lymph nodes with a cold before but I can't get rid of it. Also I feel a slughtly strange feeling in the skin around my lower lip. A bit numb, I have read about throat cancer and lymphoma. Do I have normal symptoms of a cold/sinus infection that is lingering or is it something worse? I recently started smoking again after 4 years of quitting so I am worried.