Yes I had that diagnosis and am still here!
I had surgery first then chemo with Herceptin, then radiotherapy. I could only have 4 out of 6 chemos because my blood counts went too low. So they stopped the chemo and I had a month off then started the radiotherapy and I had all 18 Herceptin injections.
I didn’t have your diagnosis, but soon after I was diagnosed, I was talking to a colleague at work with a similar diagnosis to you (at 40ish). I had worked with her over the past few years & never knew. She had just had the 5 year all clear, looked fab & is working full time.