My lecture and speaking schedule has kept me pretty busy. So, unfortunately, the book has been put on hold for now. Wingy, go ahead. Perhaps, prior to staring you had a hormonal imbalance that produced the pain. It is also possible that the pain simply stopped on its own.
Breast pain is very serendipitous at times.
I know that makes me sound a little flaky, but you would be surprised at how often breast pain will simply go away with no help from me. She may have enough circulating hormones to stimulate the breasts, but not enough to stimulate a period. Also, around perimenopause, hormone levels vary widely. Some women actually experience an increase in symptoms at this time. Your breasts are responding to the stimulation of the Estrogen you are taking to replace the hormones you lost with the surgery.