I am six weeks out from a right total mastectomy for disseminated DCIS and one very small invasive tumor. Nodes clear, no residual cancer. Oncologist wants me to take Arimidex to protect the other breast. Has anyone had the side effect - vaginal thinning and dryness on Arimidex? If so, did it revert back to baseline when you stopped taking the drug? I am feeling really good right now and don't know if I want to subject myself to nasty side effects when I don't even know if it would actually prevent cancer in the other breast.