Artsee, thanks for sharing your experience here. While itching isn't a typical sign of breast cancer, it looks like in your case there was a connection. That's why it's important to get ANY breast change lasting longer than a month checked by a doctor; we all have our own breast cancer experiences, and they're all different. Hope you're doing well - PJH

Artsee, we appreciate your taking the time to share your experience here.  Itchy breasts are very common, and most of the time the cause is not cancer related.  Itching, however, can be an early symptom of two uncommon cancers, Paget's Disease of the Breast and Inflammatory Breast Cancer.  My first breast cancer symptom was tenderness, followed within a week or two by intense itching deep in my breast.  This is why it is so important for people to see a doctor for any breast changes, even when they don't feel a lump.  I don't know if your tumor could have been found more quickly.  It may be that a tiny tumor too small to be detected was pushing on a nerve or displacing tissue in such a way that you experienced itching.  

Hopefully your body is just readjusting itself to the medication being done. I felt better once I got off my AI, Arimidex. Good luck - hope you get over the achiness soon. PJH