Maybe it means you are exhausted, and need to slow down even more...usually that is what i take it to mean when I feel that way even if it seems like its ridiculous the pace I am going with something would cause too much stress.

Also mentioning it to your therapist might be a good idea, maybe there is a better approach they know or they'd just suggest taking things a bit slower when it comes to discussing traumatic stuff and feelings about it. Either way it is good for them to know if you're feeling exausted or overwhelmed.