Pain and Procrastination

I set a goal to stop procrastinating, and true to form, it's taken me a couple weeks to follow through.  Truth be told, this is pretty speedy for me.
Today I saw my doc for my on-going chronic pain fibromyalgia issues.  She was very helpful and caring, and is working with me to alleviate my pain.  For some reason it's difficult for me to say I can't do my job.  I now have a torn muscle from lifting the residents.  Enough is enough and it's time to say when.  
I am now on my way to work to tell them I just can't do it anymore.  I'm going right now.  Really.