This is very interesting to me en.wikipedia.org/wiki/Cytomegalovirus_colitiswww.ccjm.org/content/79/1/12.full
i know I harp on this with you and Im not a doctor, but really seriously consider Olive leaf and monolaurin. I think they might really help you. You must take enough though.
Also, ive heard of folks using valtrex for both EBV and CMV.. I dont put much faith in the test results you got. if you have EBV that youve had repeat issues with.. well.. its likely chronic and can awaken at any time.. just cause they cant catch it doesnt mean it isnt effecting you. They are called stealth pathogens for a reason.
Lastly, you could look into both mycoplasma pneumonia (Ive got this and it's exhausting) and chlamydia pneumonia. Do you get fevers.. if so, look here..
Good luck.. dont accept living like this and keep searching for answers.