Re: Lump on right side of neck. Currently taking antibiotics...
Hi and welcome to the boards!
Sorry to hear of the issues you are having.
As to your questions: Lymph nodes can remain swollen/enlarged for a long time after an infection/cold/illness/etc.; however, as you guessed it is one of those things that varies from person to person. I believe normal "rule of thumb" is if a lymph node has been swollen/enlarged for 3-4 weeks for no known reason it should be checked by a doctor. If the lymph node is painful it is more likely an infection. Is the are of the lymph node warmer to the touch than normal or other areas?