Sorry to hear about your problem but I am glad that you are seeking medical attention for the same.
The pain which you are describing could be due to many factors. The most common is fibroadenosis
, which occurs in middle aged women and is associated with lumps and pain in the breast, which is more before the menses. These lumps are usually not malignant and the pain gradually subsides.
If you have pain at other points as well, then it could be a condition known as fibromyalgia
, which responds to medications.
I would advise that you visit a breast surgeon and a physician and let them evaluate you for these conditions.
Hope you get well soon.