Hi @madijen, welcome to Connect.
I have heard about post-mastectomy pain syndrome (PMPS). Here's an article from the American Cancer Society describing PMPS https://www.cancer.org/treatment/treatments-and-side-effects/physical-side-effects/pain/post-mastectomy-pain-syndrome.html
I'm tagging a few members, @elvandi @donnay @cindylb @leannz @lchavez @kathleensunshineobrien @deniseestrada, who have had breast cancer surgery to see if anyone else here has experienced PMPS or nerve pain related to surgery.

Madijen, I'm glad that you've finally found a medication that helps. Is your pain caused by nerve damage? Did you have a full axillary lymph node dissection?