Halls,
Surely it won't be a complete waste. They had to know you were going to be in pain today. That camera is there for a reason. Let me try to rationalize it for you this way. The two times I have had to go into the seizure monitoring unit at Vanderbilt University Hospital where I am wired and videoed, they tell me to push the little button every time I think I have seizure activity. Well, sometimes I do and sometimes I get tired or go to sleep and it doesn't matter, that's what the camera is for. I think your camera will do the job for you also.
I know it's hard to stay positive when you hurt like hell.
Take care!
Carla