question: I have very bad body aches and joint pain. I had a mastectomy on 02/04/14 for stage 1 HER positive right breast cancer. PET scan in April 2014 was negative. I took anastrozole 1 mg for about two and a half weeks but the side effects were too much to take it so I told my doctor and quit taking it. My symptoms were dizziness, hot flashes, body aches/joint pain, insomnia and hair thinning. I am still having all these symptoms even thought it has been about 3 weeks since stopping the medication.