So a few weeks ago I noticed 3 small lumps on the bone behind my right ear. 2 are tiny the size of a lentil and move around when pushed. The middle one is more flat, a bit bigger and seems attached. There is no pain or any other side effects. They dont seem to have changed size or shape. I have no health issues allergies etc. I did some research on google which of course made me even more anxious. Any one have any idea if it is something serious or something to be worried about?