In case you don't know about the site for all things peri and menopause related, here 'ya go. Maybe there will be some additional info. on that site that could help: http://www.power-surge.com/php/forums/
I've been in peri for over 10 years with no end in site. It's awful. I feel for you!
ETA: Sorry, I didn't realize I had posted this link already.