pipdog

There a few things which might help you in the short term
Heat Therapy: get a wheat bag, microwave it say for 2 -3 minutes and place it where the pain is.
Arnica; this is a plant which is know for its anti-inflammatory properties so rub some lotion around your jaw area.
Cervical pillow; these look like a 'p' on its side in section, the bulge going under your neck when you sleep which helps with the posture.
Ibuprofen: this works as an anti inflammatory as well
Stretching exercises:my 'normal' dentist (i.e he just a fillings and maintenance man) showed me some exercises to stretch the facial muscles kind of similar to what runners do to in effect

I find if I do all the above I can really take the edge off the pain and feel empowered.

Long term I think splint therapy is the way to go. I'm being fitted for mine August 10th

Hope these tips will help you!