It's just occured to me this is what's happening to me! Im getting periods every two weeks, they are heavier and more painful and i have no energy. I'm 47 so quite likely but every female in my family has been mid 50s so I was expecting to be the same. I'm scared what to expect really, I'm very hormone led and can basically tell you when my grumpy/energetic/horny weeks are 
so its nerve wracking how I'll feel when all these hormones disappear. Any reassurance??