What Causes A Lump Under The Ear Lobe?

I am a healthy 29 yr old female. I have been a vegitarian for one and a half years. I had my tonsils taken out in November of 2008. The reason I had them removed were due to "tonsil stones" that caused my tonsil to be enlongated and enlarged. About 5 months ago I noticed a little smaller than a pea (I would actually have to feel around for it) beside my jaw bone under my ear lobe. Now it is about 1cm maybe a little smaller but deffinatly bigger than it was 5 months ago. I have no pain associated with it and no sxs of infection or illness. I feel very healthy and well. I do not have any issue with my salvary system AEB no excessive mouth watering or pain when i think or eat lemons and salty things. I do not have ANY family history of cancer on either side of my family. I have a doctors appt with my ENT but it's not for another week. I'm just a little worried>>> I do understand I can not find the diagnosis here but maybe someone can tell me if possiblity it can be related to my tonsil stones or what??????

Thanks so much for any info that is given to me. I just really want some comfort or to know the possibility is there for something more serious. Either way just some knowlege of possibilities! :)