I noticed this lump the other day because it felt sore behind my ear. It's pea-sized and behind my left ear about 3/4 of an inch abive my earlobe.it feels hard and doesn't move. It's very close to the crease (where my ear meets my head)... I get dizzy once in a while and headaches from it on the left side. I have a doc appt in a week... just wanted some opinions