Switching from Tamoxifen to Arimidex

I've been taking Arimidex for seven years. I have experienced two main side effects 1) ongoing fatigue, loss of vitality. This kicked in almost immediately. 2) very tender feet after three years, good days and bad days, limits my mobility. I've tried a variety of prescription painkillers and other treatments but nothing makes any difference. 3) Stiffness, aches and pains 4) bone density has decreased.

Sounds a bit grim, however, we are all unique and what causes severe problems for one the other may experience very little change. Its a case of trial and error.