Sometimes it could be that. I know that even if I don't feel like an issue is a big deal, some part of my brain might feel otherwise and might trigger the depersonalization to get a little space to work on it. One of the tricky things about it is that you might normally be able to control it, but it does have a way of living it's own life at times. I've noticed that myself and with friends who have trained self hypnosis to deal with chronic pain.
Good luck with the issues work, Venus. HUGGGGS, if needed.