All good news that your sentinal node is clear as Her2 are very aggressive cancers. I am assuming your tumour must be large if they are suggesting chemo 1st.
My biggest fear was dying and leaving my children. My sister died of breast cancer. My sons, teenagers, were not ready for any life without a Mum. I chose the most radical surgery offered to reduce my local recurrence risk and accepted chemo without hesitation. I live 500km from my surgeon. I chose mastectomy in hope of not needing radiotherapy so wouldnt need to stay sway from home for additional time. If my sister had been diagnosed earlier her outcome may have been very different.
Most chemo unless dose dense is every 21 days. So I guess you could travel home in between. However with a baby this would be challenging and really you are going to need help. Perhaps a family member can accompany you?
Do you have a breast care nurse? They may be able to assist you with information.
https://www.mcgrathfoundation.com.au/OurMission/OurNurses/FindANurse.aspxI was devastated to lose my hair. In fact I can't think of a single woman I've met who found this process easy. It was harder than losing both breasts. It is though only a few months of your life in the big picture of it all. And that's the important part...your life. If you can't find a solution within a week or so you really shouldn't delay any longer. Her2 cancers are aggressive and can become metastatic in such a short time. My surgeon was relieved mine hadn't, as was I.
My niece 14 years on (the daughter of my passed sister) is now 14 years cancer free of her her2 cancer. She was on the clinical trials of the same regime as me. She calls it liquid gold and is grateful to have been able to watch her babies become teenagers. Please don't delay having that opportunity. Kath x