hi,i have had a swollen and painfull lympth node behind my right ear for months ,along with a heavy feeling on that side of my head/brain ,its making me very anxious as the doctor just sais im fine unless it gets bigger.surely this isnt normal ,im a 30yr old female and a smoker and im worried it could be something sinister,or could it be tooth related as ive had the neck pain before when i had a rotton tooth,although the tooth didnt hurt.