I wanted to add that although I did not have radiation due to electing a double mastectomy, I only had three nodes removed, but still got lymphedema in my left arm. Catching it right away and getting massage therapy did cure it. Did not know at the time that my belly was effected by lymphedema or I would have gotten massage therapy in that area.
I was also puzzled by your hormone therapy, as TNBC is not hormone driven. Take a look at the MD Anderson study on TNBC and taking a statin drug. I now take Lovastatin as a possible deterrent to reoccurrence.