@whimsicallyinpain -

Being on crutches and in a boot for 3 months can cause an imbalance in strength, gait and during that time of muscle weakening can cause distal musculature to take over that otherwise wouldn’t. This can cause a lot of bracing, tightening and stiffness. That you become accustomed to without realizing it. One issue in an area of the foot/ankle can cause referred pain into back shoulder etc…

Don’t be fooled by a “fibromyalgia” diagnosis. Go with your gut as you know yourself best. MDs also have to document something in chart for billing purposes. A “diagnosis code” to get paid. And MDs don’t like to say to a patient “I don’t know” which most of the time they don’t. But a loose umbrella like diagnosis can protect their ego and a bad review from a patient whom reports they went to a doctor appointment and the doctor has no idea.

It’s a shame but this is how it works most of the time.

Trust your own instincts, above all else.