Stretching Lumbar Spine While on Computer

I have persistent and chronic Lumbar Spine pain. I have an extra chair lumbar support that I put on my bed, then position my lower back on it. Putting a pillow or two on my abdomen/stomach, I position my computer and then do my work, and reading online. Whatever I send to print, (wired or wireless), I pick-up after my stretch/computer time is over!