Susytish I have friends with Fibromyalgia it can be very painful and disabling.
I haven't said it to frighten you but they live a normal life.
I had to wait until I was 64 before I got diagnosed after a life time of pain in my limbs,falls,seizures and limb jerks. Only genetic blood testing solved the puzzle and I was born with it and it's rare. Finally I am on a tablet to stop the seizures and jerks . But the damage to my limbs has been done. Still have all the other problems associated with my condition.
I hope your blood tests solve the mystery for you .