Sal,
    I understand the stretching fingers, but please explain what to do with your thumb. In an attempt to stretch, I've been gently pushing my thumb away from my palm and down toward my wrist. Is there something more I can do?

   Too, after a change of desks at work, I noticed the ongoing pain that I had in my shoulder disappeared, but that is when the pain/big-time-swelling in my writs and thumbs began. Have you heard of any connection (perhaps a referred pain) between shoulder pain and deQuervain's?