I am a TNBC survivor 3 1/2 years on from my diagnosis, I also have Eostrogen + BC as well.
My advice to you is knowledge is power, so ask your oncologist, Breast Care nurse and oncology nurses any question you may have regarding your treatment. That is what they are there for. Surround yourself with positive people, they will help you through this journey. See each step in your treatment as a milestone on the journey to becoming a cancer survivor.
Your surgery has removed the cancer and chemo and radiation will deal with any rogue cancer cells. Put your faith in your oncology team, my experience is they are amazing caring health professionals who are always there for their patients.
Learn to listen to your body, if you feel tired rest. Accept help from others, it doesn't make you less of a mother if someone else cooks dinner for the family whilst you are undergoing treatment.
Regarding natural supplements just be aware that some natural medicine may be contraindicated with your chemo treatment, your Breast Care Nurse is probably the best to give you this advice.
Ginger can help with any nausea, acupuncture can also assist.
Go to the Look Good, Feel Great day run to help female cancer patients learn tips on makeup, wigs, scarves etc. It is a great day out and you will be pampered and come home with a goody bag of makeup.
You will find an inner strength you didn't know existed, and you are not alone in this.
Sending you warm healing energy. Check out meditation podcasts of Dr Robert Puff "Meditation for Health".