The best advice at this time is to first and foremost not drive a vehicle. You can substitute your car for an Uber or Lyft service just until things come under better control. I believe you would benefit from a 2nd opinion on the diagnosis of fibromyalgia because although the condition is certainly known to be painful and debilitating as well as causing people to be depressed and withdrawn it's not known to cause diffuse ARTHRALGIAS and trigger periods of frank anger. But your most immediate safety issue is that of driving cars.....Please consider stopping that activity until you can get things under control.