Definitely recommend a spinal doctor visit. X-ray didn't show anything, but the MRI found unilateral stenosis caused my sciatica. Stretching helped some, as did an inversion table. But for me, the big difference was refraining from stomach sleeping and using a pillow under my knees when sleeping on my back.

My big question now is: Should I reconfigure my indoor training bike with upright handlebars to avoid a long crouched position?