I am also suffering from sciatica now and it has moved to my right side as well. I still think my sacroiliac joint is a huge possibility, but the timing of when my illness got out of control seemed to be all too coincidental. It travels from like you said around the lower back to my hips, but also my pelvic and groin area. Have you had blood tests suggest that there is something going on with your kidneys?
I have had tests and scans, supposedly everything is ok. I have had some slightly high cortisol, I’ve read somewhere that this could cause intermittent pain above the kidney, but not sure if that’s true. My labs consistently show low platelets, low WBC, abnormal lymphocytes. Otherwise fairly normal.
Just my personal opinion, but I believe this virus (and maybe others) can set up camp and hide out in a variety of places in our bodies.
Years ago, (before I knew anything about EBV or that I might have it), I asked doctors if it was possible to have a deep seated infection hiding somewhere. I was told, firmly, NO.
Ten years ago, I had a severely infected tonsil, and had them both removed. Rough surgery and recovery, but then for 6 months I had a full remission of everything. It was like a miracle cure, I felt like I had my life back.
I questioned the doctors. Their answer: “well, you probability had a deep seated infection that’s been hiding out for years...”
Then slowly, after the six moths, all the sick, weak, flu like symptoms returned.
I’m fairly certain, that if they had bothered to test that tonsil, they would have found EBV.