You could be me. I fell 8 years ago very hard on my butt and lower back. Ever since, even after many docs of various persuasion, many treatments, injections, spinal cord stimulator, pain pump, etc, the pain or sensation of sitting on what I describe as two hockey pucks, has never gone away. Like you MRIs have not shown anything. But, as a retired science teacher, I knor that for every effect there is a cause. I just can't seem to get any doc to look further into this. I had to take charge of my medical journey years ago due to the apathy og most of the doctors I encountered. So, here I am with a totally non effective pain pump, an old spinal cord stimulatoer which was just removed, and waiting for an MRI to hopefully show something.
May we all find the help we need. Perhaps an empathetic doctor somewhere along the line.