<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hi, I ve been going on planes and sleeping in hard beds this past week. I ve just noticed a small lump in the back of my left neck and a bigger one right on the left of my neck, exactly below my ear. The lump doesnt hurt, but my left throat hurts when I swallow. What should I do? Thank you so much!  <response>: Respected user, HiT hanks for using Chat Doctor.come have evaluated your concern thoroughly. This seems most likely lymph node enlargement maybe secondary to upper respiratory infection . Recommendations for the same - Gargles with salted lukewarm water 3 times a day.- Consult your doctor for the need of antibiotic as well as anti-inflammatory Chat Doctor. Hope this clears your query. Welcome for further questions. Regards. 