Hey, I have been experiencing the same problem for about a year 1/2 now. About a year or so ago, I noticed that one of my lymph nodes were swollen in my neck and one of my tonsils (only on the right side). I went to see an ent doctor and they gave me an ultrasound of my neck and saw nothing but a small lymph node and the swollen gland and said it was a virus, not known and would heal on its own. It hasn t gotten any worse or anything, the lymph node is the same size and so is the tonsils. I do have a baby tooth (with an silver tooth), as an adult tooth was never underneath to grow.. It is infected (black tooth) do you think this could be the reason for the swollen tonsil on one side and lymph node?