actually, sometiems it is smaller than other times. Such as right now I can barly feel it but yesterday it was obvious

i too have a problem with my lymphnodes swelling for years. from what i understand the lymphs swell in reation to an infection and help to fight off whatever is invading your system. i was told by one medical "professinal" that if it were cancerous i would be dead already :-/ . I have gone to other doctors and medical specilaist and they have returned no answer for this condition. They ran several blood tests and biopsy. It is worth going to have the biop done just to make sure it is not cancerous but to find out why they are swelling may take years worth of testing so be sure you have good medical! And do not settle for the "nothing is wrong" as I often get. Find a good doc who actually cares and is willing to help you get to the bottom of the issue. Good luck