I hope you get some responses from women in your situation. I don't have secondary cancer and can only imagine how devastating that must be. But does that mean you can't or shouldn't have reconstructive surgery?
Having breasts makes us women feel whole again and helps us put the cancer journey behind us, to move forward and to live our lives. Having ongoing treatment is a constant reminder but too look in the mirror and see your body put back together could be a huge boost to you emotionally and this could help you in other parts of your life.
Why not have the chat with your GP or onc and see what they say.
I reckon go for it, sounds like you want to.For me reconstruction was to make me feel better undressed, and it does......or will when its completed.
Good luck with your decision
Xxxlouíe