Arimidex and joint pain

I have been taking Arimidex since April of 2005. I have two more years before I can be taken off of the medication. I had breast cancer, diagnosed Oct. 2004. I had a lumpectomy following with chemo and radiation before I started taking Arimidex. I have severe hot flashes, can't sleep at night. I am up and down all night long. I can't remember things I am always having to make list and writing dates down and sometimes I get confused. I have joint pain, leg cramps and hair loss. My biggest problem is I can't sleep. I am always tired.
A. from Florida

The joint pain is not bad, but I hate the thinning hair! I used to have thick hair and now you can see my scalp in spots. I'm wondering if Nioxin or Rogaine for Women will help at all or if my hair will grow back in normally after I stop the Arimidex. I also have had back pain and stomach or digestive pain I never had before. My doctors have run tests and have found nothing wrong.

hot flashes, joint pain especially in neck, right shoulder and legs. It is like having flu-like symptoms on a daily basis.