Is there a possibility of Lymphoma?

Im 18 years old and about 6-8 months ago i found a marble sized lump just under my jaw around the epiglottis area. Then about a month and a half ago I began to find another lump on my left supra clavicle area. This one is much larger! I went for an ultrasound and chest xrays and they both came up normal. The lumps aren't painful and are slightly movable. I am very active and they don't bother me then either. I am concerned though because the one on my collarbone seems to be spreading towards my shoulder more and more everyday. A new pea sized lump appeared more towards my shoulder about 2 weeks ago. The only other persistent symptom is that I was getting these really bad pulsing headaches very frequently for quite sometime. Now instead of multiple times a day they come every day or two.
  I went back to my doctor and he ordered bloodwork and sent me to a Otolaryngologist. But my appointment isn't for 2 1/2 months....I received a call not too long ago saying that im at the top of the waiting list, which means that if someone cancels i get dibs on that appointment first before others. Should i be concerned? what COULD the lumps be?

[Ken_PA]

is the bump on your collarbone right on top of the bone? if so, it's less  likely to be a lymph node

should you be concerned? being put at the top of the waiting list likely means they don't think it's trivial

being painful, movable or not... etc are indications but not proofs

what does your CBC say?

The lumps could be from infection or some other immune process. If lymphoma, at your age it'd be tending more to Hodgkin's Disease than NHL --- but lymphoma nevertheless seems the least likely explanation at this point.

Did you doc mention lipoma or sebaceous cyst? If he was very worried about cancer, I'd guess he'd have sent you to an oncologist straightaway rather than the throat doc.

the original bump might have been merely something wrong with a salivary gland