@kmakm - sounds horrible - I have enough issues with aching hips and knees from arthritis so hope I don't get this when I start my tablets as I think it can be one of the million possibilities with Tamoxifen too. I have been thinking about getting a script for something - maybe valium - for those nights I can sleep or and doing the doona dance - its makes it so hard to work on 4 hours sleep. Maybe you should talk to your doctor about something additional for pain relief. I found panadine forte great for my bone pain during chemo if you can handle that.