From what you wrote there you have an active Epstein Barr Virus. As far as the Cytomegalo virus I believe yours is negative. It says positive because it is positive for antibodies which means you had it and your body has controlled it. Your immune system over powered the virus. It will do the same with the EBV.
EBV was the precursor for the CFS I developed and then FM. Good news is we are all different. As soon as I developed the antigen needed for the EBV to be controlled, the CFS went away and FM has stayed but I am much less fatigued.
I hope I have helped answer your question.
The majority of the population will test positive for CMV and EBV. However, people who are chronically ill have been found to have high frequencies of viruses, bacteria and other pathogens in their blood.
Here is a link to a recent interview with Dr. John Chia, M.D., an Infectious Disease Specialist who frequently sees CFS patients.
http://phoenix-cfs.org/IntChia2.html
So what are your symptoms ?