I was the same as Reha. I’ve written about this before on here. The muscle cramping used to be so bad I couldn’t get up and it would radiate down to my thighs like I had done an intense work out the day before. My BP would also get very low; it’s on the low side anyway. The symptoms have become become better as I’ve aged.
I also get irritable and snappy but I think that partly is to do with the physical pain I have.
If you want to try some natural remedies, you can start taking chasteberry or st. johns wort as they have been shown to be effective in relieving the symptoms by balancing hormone levels.