I'm sorry also to hear that you're feeling badly. Don't worry if the doctor says you're depressed. No one can live with chronic pain and not be depressed, at least some of the time. It kind of goes with the territory. That can get better.
If your jaw pain is caused by TMJ, a jaw problem, it is one of the things that can co-exist with fibro. TMJ can be treated, I think.
I have three fused vertebrae in my neck an know how bad neck pain can effect you.
We do need to aim for at least an hour and a half of REST each day. Someone said to take on only 1/3 the amount of work you THINK you can do.
You'll find the right combination of rest and exercise for you. Low impact exercise can help, too.
Don't give up the ship yet.