Hi spriest,
Thank you for reaching out to us with your question. I haven't come across this too often, but have heard of it. In fact, I found this small article about it; https://www.ncbi.nlm.nih.gov/pubmed/16643566.
Have you had a chance to mention this to your doctor? If not, I would encourage you to. It might be beneficial to keep a journal of how often this happens, any possible triggers and patterns. It would be a good source of information to share with the doctor.
Hopefully others will be along shortly to share their story with you.
Wishing you a low pain day,
Nancy