I've also been in a lot of pain in my left side... My jaw, my teeth even. My shoulder & my neck, as usual.
I slept off and on this morning, and stayed in bed until about 1PM or after...
I've got the heating pad on my shoulder now, which seems to be helping.
I don't really want to go to work tomorrow either, however I have committed to being at a meeting tomorrow morning at 9AM, and let them use my laptop during the mtg. Besides tomorrow I can wear jeans to work, so it can't be too bad. If I'm in alot a pain, I will leave after the mtg.