Well, I still haven't figured out how to watch Pride and Prejudice at my desk and keep my job. But now the heating problem is solved. Playtex makes a little dohicky called Heat Therapy. It's a disposable adhesive patch that you stick to the outside of your underwear and it provides soothing heat throughout the day. The package says it lasts up to 12 hours. I've had this one on for close to ten and it's still warm. It so worked for me. And the psychological benefit was also significant.
It's about fucking time.
Of course, you might have had these in the US for a decade now and they're just now appearing in Canada. It wouldn't be the first time.