Started on Arimidex last November, 5 months of this drug was horrid, my Oncologist then swapped me over to Femara, same drug different maker, slightly different side effects. This is better for my body, I am yet to have my 12 month bone scan to see what it is dong to my body.
As far as your breasts go, I too had major shrinkage with radiation. Decided to have other breast reduced to match. Had 30% removed, this also reduces risk in this breast as well. If I can offer any assistance drop me a message.
Viv