Can anyone tell me about EBV VCA IGG levels?

I've been feeling horrible for weeks lately and got an unexpected test result back for EBV.

My IGM is negative, but my IGG VCA is a value of 4.19. Which I was told was high. I haven't recoved at all and I'm wondering just how high my IGG is and if I should be concerned with this being a long term CFS situation?
My doctor said you have mono, but I'm negative for IGM and I have no sore throat or fever. What should I make of this and what course of action can I take to understand my condition better. Also is my value of 4.19 equal to a 4,000 IGG, I'm a little confused with the numbers