I didn’t have your type of cancer, I had IDC with also one node affected, only 1mm isolated so doctors were not worried about it. I decided against chemo as without oncotype DX test benefits showed barely 1%. I feel side effects were much bigger than benefit. I am also about to start radiotherapy and Letrozole, which stops cells from growing, which should work better than chemo in my case. So not sure if there’s other treatment your doc has offered for your cancer, but I think with such a low percent chemo is not necessary. My onco agreed with this (for me). Good luck!