I haven't divorced anyone yet, but I have felt like that at times in my life when I was emotionally exhausted. I could not get out of bed, had pain everywhere, especially my back, and overall felt like an old lady (I am 35, mind you).
I am sure you will feel tons better once things go back to normal and you can find some peace and quiet. Stress and uncertainty can drain all our energy, but positive changes in your life will bring it back! :ghug3
Take care!!