After having stage 4 breast cancer, going thru chemo and radiation, the doctor put me on arimidex, it hurt my joints so bad i had to quit taking it. Now she wants me to go on Tamoxifen. Truthfuly I am scared to take it. I have heard of emtional swings, and worst of all i have heard it could cause uterian (not spelling that right) cancer. I don't want the cancer to come back and am really doing my best to maintain my health. I am confused on whether to take it or not. Any suggestions? I am sure no one wants to argue against a doctor's advise. I am grateful for the doctors but on the same token they aren't God and they can only prescribe what they have been taught. Is anyone out there having bad side affects from this? I have gone through so much and dont' need my body to fall apart anymore than it has.