My gland behind my ear is pea sized and hard and have been for months is this a sign of lymphoma also i've just been feeling so stressed and scared ?

Many other causes: There are many causes of lumps behind the ear. See: http://www.healthline.com/health/causes-lumps-behind-ears#Overview1 One common one is a sebaceous cyst, which is benign. Most lymphomas occur in areas of larger amounts of lymph tissue, although your concern is not crazy. The lump should be examined by a Dr. Your stress and anxiety may be addressed in another HT.