I volunteer at an animal shelter every saturday, and while I'm usually tired afterwards, it doesn't set me back too much. If anything, it helps a bit because it makes me happy to be around the animals--that kind of negates any pain I might get from it, though I try not to overdo it too often. Anyway, yesterday I went and was there for about 5 hours. Not all of that time was spent doing heavy work (most of the work I do is cleaning the cages, but there's also dishes and mopping/sweeping, which aren't as hard on me); I didn't do any more than usual. I've had a UTI for a little over a week now, and I finished the antibiotics on friday, but it started coming back again on Saturday, so after the animal shelter, I went to the hospital that was nearby, not wanting to wait until Monday to get seen by a doctor. I was only there for about 40 minutes, and then I went home. That's all I did. But I was exhausted when I got home, and last night I was in so much pain it took forever to get to sleep. Today I'm in just as much pain, particularly my arms, which is weird, considering I didn't use them any more than usual. I know that this sort of thing fluctuates, but I've never had THIS much pain just from going to the animal shelter. And the pain I get when I overdo it there only lasts for the rest of that day. Can exhaustion trigger pain in and of itself? I was out for longer than usual, but after the shelter I didn't do anything that could trigger pain. The only thing I can think of is that being out for 7 or so hours exhausted me to the point of causing more pain. Has this happened to anyone?