Pam - I had a hystectomy and mastectomy in 2005, my cancer was er/pr +
After I went through chemo, my doctor put me on Femara, which is for post menopausal women with er/pr+ cancer. It helps to prevent that lil bit of estrogen your body produces WITHOUT ovaries from binding with abnormal cells (like cancer) and helps prevent it from growing.
You body will still have bits of estrogen, it does not cut off the production of it made by glands or stored in fat.
That said, it's probably best to see an oncologist and see what they recommend as there are many drugs on the market......tamoxifen, femara, arimidex to name a few, and each do different things!
but still, not all things can keep cancer at bay. 3 years from my original bout with cancer I am now faced with recurrent breast cancer because my body didn't respond to the meds I was taking. My estrogen fed into those cancer cells. luckily my plastic surgeon found it while I was going through reconstruction. Now I am faced with surgery to remove more of my chest wall, radiation, chemo and new meds.
Talk with your doctor and he will help you with a treatment plan.
Best of luck!
Angi