These are my experiences, just adding them to maybe help others.
Re Serentiy cream - a god send, it's changed many peri/menopausal symptoms 60% or so to the positive. Give it a couple of months to kick in. Comprehensive booklet comes with order.
PMS - Agnus Castus tincture - inexpensive from an alternative health shop. 30 drops very first thing each morning - very good for irritation. Excellent in combination with Serenity cream. Again give it a couple of months.
Night sweats - black cohosh, 2 caps a.m, 2 caps pm with food for two days - stopped my sweats in their tracks.
Cystitis - I suffered for years with this awful problem but have discovered two things: Mix a good teaspoon of ground cinnamon (ideally organic, easily available at most supermarkets or any health store) with honey into a paste - add hot milk. Apart from knocking out my cystitis it's also a lovely drink! This didn't work so comprehensively for a friend though.
Tips: before intercourse drink water and have a pee. Immediately after intercourse drink water and pee. Not very romantic but it has made a difference for me.
Try keeping feet and lower back warm - sounds crazy but over the years I've discovered that has reduced my 'attacks'.
For Bladder problems in general - excessive loo visits, lack of bladder control, waking up at night to go to the toilet etc I've discovered the wonder of Cayanne pepper (organic is best as additives can affect the outcome). I bought food grade capsules on the web, and carefully (wear gloves) filled a jars worth. I took 2 a.m. and 2 p.m with food. The results (in 4 days) were nothing short of a miracle cure.
I find being receptive to alternatives can be very useful, as can going to a doctor when neccessary. Find what works for you. A very useful sight for all things health related is Earth Clinic - nothing is being sold, no adverts, just people like you and me sending in/asking for advice.
I hope the above is useful - bit of trial and error re amounts and time of course....
Warm wishes,
Rose