I have been having pain on the right ear, a small lump behind the right ear, a big swollen lymph node on the right side of my neck under my jaw, smaller ones near it and small ones on the left and my right tonsil has a white linings on it looks scary for many months now, previously I had difficulty swallowing and sore throat which has reduced but i'm still worried about the lymph nodes and my right tonsil. I'm afraid I could be having throat/tonsil cancer as google says so, is it normal to have unusual tonsil? And swollen lymph node for several months? And I wanted to know can a person know they have cancer from full blood count?