Agreed. And I would probably skip the xray. I don't think that will tell you anything and give you a dose of unnecessary radiation. If the doc really thinks it needs to be checked out now, I would think a biopsy would tell you more.
Also, be aware that if it is a lymph node you a feeling, continuing to palpate this area will keep it swollen (reactive lymph node). See this archive from another website for more info: http://www.askwaltstollmd.com/archives/lymph.html