I would like to add that since your Mammogram,CT scan and biopsy were negative for cancer,you should not worry about it.
The pain you are experiencing is mostly due to benign causes.
Hi again,
Your posts have already been answered on April the 6th.
Please click on the link below.Thank you.
http://www.medhelp.org/posts/Breast-Cancer/breast-pain-and-underarm-pain/show/1711659#post_7837229