Please! Someone tell me all about Epstein Barr! My doctor diagnosed me with it after a blood test a few days ago, but never explained much about it to me. All I know is that I am always exhausted and have fallen asleep at home, at work, in church, and while driving. The blood test said I was in my "final stages" of the virus. Please explain this all to me, as I am totally lost. Never heard of it before. What causes it? Is it contagious?