I was diagnosed with mononucleosis 7 months ago . Since then I have not been able to recover?

Hi , I am a 31 yr old other wise healthy male of Asian descent . Was diagnosed with mononucleosis 7 months ago . Since then I have not been able to recover and have not been able to work . There has only been about a 30% reduction in symptoms from the initial stage . I do not test positive for mono any more but symptoms still exist . Main symptoms are extreme fatigue discomfort in the side of the abdomen (flank area ) and depression . Symptoms seem to relapse upon the slightest exertion or exercise. Have seen several doctors with no specific treatment or medication just rest . Could EBV virus recovery take so long or could this have progressed to any thing else ? Please advise . Losing hope here .