Bram, last night I had very similar through my *ahem* girly parts. It was a stabbing pain and hurt like hell. I don't have a cycle any more thanks to the mini pill but it did make me wonder about the inflammatory nature of CRPS and its effect on those who do. My periods were hell on Earth back in the days before the pill and I can't imagine going through them alongside CRPS.
Last night I lay awake til after 6am, this sleep malarky is getting beyond a joke!