There was discussion a while ago about shooting pains in the "breast" that hit out of the blue - and sometimes recur every however many seconds for up to an hour. I'm 9 months post-surgery and 8 weeks...
I occasionally have that stabbing with a nig needle pain also. Weirdly I smile...as I used to have it before they cut my boobs off...so at least the new job feel like part of me.