Newly diagnosed

Welcome @ HelenSusie7.

The beginning is terrifying.  Scattered emotions, overwhelming fear and a brain that just won't quit with all the negativity.  It's perfectly normal what you are feeling.  
Chemo is the big bad boogeyman of the trip.  It's the unknown that's the worst part.  Some of us get through quite ok, I worked as well, and was able to continue on with life fairly close to normal for the majority of the time. Once that first one is out of the way you'll feel a bit more in control.
All the best.
xoxoxoxo

I had a similar diagnosis, nearly seven years clear. The panic at diagnosis affects almost everyone but things do become less scary when you have a plan and start treatment. Reactions to chemo vary a lot but in the first two weeks or so you will get a good indication if how it may be for you. Not everyone has bad reactions - I had no nausea for example and worked through six months of chemo.  Herceptin treatment extends your active medication time but has proved to be effective and I had no adverse reaction to it at all. Best wishes for next week.

The great thing with her2 is there has been great breakthroughs with treatment which means her2+ cancers aren't difficult to treat as they were some 20 years ago.  Unfortunately Google doesn't seem to highlight this fact so it all looks very scary when diagnosed. 

I'm 2.5 years cancer free since my regime ended. My niece is 16 years cancer free (she had 10 positive nodes and was Her2+) . My bc was estrogen+ and her2+. (Stage 1 grade 3). Know there are many survivors here thanks to the current available treatment and there is also clinical trials ongoing for improving outcomes for women who develop metastatic disease.