These are difficult decisions @MeJaKeLoka. Not only does the chemo decisions consider the stage of the cancer as well are ER status, PR status and Her2-, but there is the grade of the cells too and also the Ki67 factor, lymph nodes involvement, age, medical history, family history etc etc. Sorry this is all very complicated and on top of that there is fear of chemo and fear of cancer etc as well as the other treatment you are having.
This is why we have very trained medical people who have studied hard for many years to help us decide our treatment decisions.
Ask lots of questions and even get another opinion if you want to help you decide what to do. Your breast care nurse might be good to talk to as well. Look into it all.
For me I trusted my team and I did understand my pathology well and asked lots of questions. I had stage 1, grade 3, ER+, PR+, Her2-, Ki67 was 69, no lymph involvement, family history of breast cancer but only a cousin but no braca gene, 4 malignant melanomas plus other health issues so I had surgery, chemo, radium and now hormone suspension.
My treatment including the chemo was ok. Minimal side effects but any I had I discussed with my dr and addressed it all so the side effects went away. In addition to treatment I exercised, ate very healthy (no sugar or gluten as I have intolerance), drank beetroot, carrot, apple, ginger and celery juice, took up took mediation, expressed gratitude daily and changed my relationship to the stress in my life amongst other things.
Good luck with your decision and the treatment you decide to have. Best wishes.