@Bowie I agree with Soldier Crab. Can you ring your breast care nurse? The cancer council are great to talk to. Think Pink and Breacan I found were fantastic support. I had chemo prior to surgery and met a few women that had a double masectomy. One lady in particular told me that she was so surprised how easy the operation was. In her case things went well. After I rang Breacan for support I was asked whether I would like follow up phone calls from time to time I said yes. The ladies I speak with have all been on this journey. Reach out and talk to someone. In my case at the very last minute it was decided I only needed a lumpectomy chemo had gone extremely well.
I had lympth nodes removed and feel fine. Your body does bounce back nothing stays forever. Of course your body will be different but you will adapt. Pick up the phone. So many people want to help and make your journey easier.