I have had quite bad leg pain in both legs that is considered to be to do with my lower back (bulging disc, possibly a prolapse, its uncertain) but I've been doing physiotherapy and do my exercises every day and I'm pretty much pain free every day. That is until the first day of my period, when it suddenly comes back. It happened last month and I thought hmm odd but just a coincidence, but then it happened again this month. No change in exercise levels or doing anything out of the ordinary to explain why it suddenly comes back. I'm reluctant to ask a doctor about it because I'm afraid they'll say I'm being ridiculous (they haven't been much help in general with this, only the physiotherapist has made a difference)