Neck pain after a bad sleeping position is usually muscular and settles in a few days with rest and gentle movement. With your history of fibromyalgia and a disc issue, though, it's worth being more careful about repeated strain and about adding new medicines on your own.
Next Steps
Keep using warm compresses and gentle stretching, and skip the neck massage since that made it worse. Please check with your treating doctor before taking Ketorol DT, since your other conditions and medicines need to be factored in before adding a new painkiller.
Health Tips
See a doctor soon if the pain spreads down your arm, you notice weakness or tingling, or it doesn't ease over the next few days.