I too was a caffeine drinker. As some of you all know, I did it cold
turkey pretty much. I was what I call dazed for a few days. Intense
headaches, actually felt like I was faint at times.  I am glad I did
it that way. My body let me know I had tortured it enough, I see it as
my payback for putting the junk into my boday.

I allready had/have pain. I take percocets anyways for pain for the
fibro. Also sometimes muscle relaxers. The pain and achiness have
increased. I am taking vitamins, potassium, magnesium, also a extra B
complex vitamin. The pain though is getting to me at times. Its
increased the last few days. Though I did some exercise on my
stationary bike. Was able to handle 15 minutes. I also walked some,
like more than usual.  Just taking it a day at a time. Thats all we
can do. I don't want to.. Have no desire to go back to my old way of
eating. No way!
I hope it just eases up. I know it will.

Like the old saying goes. No pain, No gain.