Some of this could be caused by stress, as some of mine is too (the physical therapist still treats it, as it's physical!) Muscles tighten and pull on the bones, joints... even slightly out of place can cause pain.

I'm glad it's not the sciatica... but it sounds bad enough. Can you remember the stretching exercises you would do for sciatica? Ham string mainly, I think. Hot packs/pads or ice, which ever you can stand 15 minutes on, 15 off...

You have been having a tough time lately, hope you can release some of your tension and get relief soon. TC