Having a systemic autoimmune disease is like riding a wave of pain, nausea, emotion, and physical limitations. It drains you entirely. You're constantly being pushed to your breaking point, and it never ends. Again, IT NEVER ENDS!
Being hit by a car will lay you up and you start gaining weight and losing muscle tone, then the fibromyalgia hits and it really becomes a challenge to keep your healthy weight. I wish fibro was the only thing affecting my weight, but I know my metabolism slowed after I had to rest up during the months following the accident.