Hi Rene,
That was good news about your lymph node - yay! - but sorry to hear you need more surgery. I had a similar situation, having a lumpectomy first and then a mastectomy a week later as they couldn't achieve clear margins. I also had to have chemo (6 cycles), Herceptin for 12 months (every 3 weeks, starting alongside chemo) and radiotherapy (25 sessions) and am now on hormone therapy (Tamoxifen) as I had three tumours with two different types of cancer; one lot were hormone positive and the other was HER2+.
We are lucky that we have access to Herceptin now as having HER2+ cancers respond really well to this type of therapy and for lots of people it has few side effects that can usually be alleviated if you let your oncologist know. The my journey kit and info on this website talks about what to expect. I found this information useful to look at before meeting with my oncologist so that I could put together a list of relevant questions.
I was diagnosed back in Feb 2012 and my treatment (other than the Tamoxifen) finished in June 2013, so it was definitely a long road but am now doing well. Like Tonya suggests, now is the time to put yourself first (difficult as that is for most of us) and rest up as much as possible before and after your next surgery on Thursday. Best wishes, Jane xx