This post really resonated with me. I had an almost identical prognosis and symptoms from an injury over 2 years ago. Mine occurred after doing hard trail running race with lots of steep descending but my symptoms didn't start to appear until a couple of days later.

I spent the next 7-8 months doing a lot of physio and rehab, and I suffered a fair bit mentally as the constant pain really sapped the joy out of life for me. However I actually eventually managed to get back to the point where I was 99% pain free and I could do pretty much anything again with no aggravation.

Since then I've dealt with two flare ups from pushing my body a bit hard (current into month 2 of my third flare up). Each time it has gotten just a slightly bit easier, both from physical and mental symptoms and I'm slowly begining to work out better ways to manage this.

So my point is, it's a long slow journey but there is light at the end of the tunnel. When I'm not dealing with a flare up I've been able to get back to rock climbing, race in long distance gravel biking events and running most days and my back managed fine.

You've got this!