Hi Jenny,
I'm in a similar boat, 33yo, had 8 cm preinvasive cancer and a 2cm tumour that was pr-oe- and her 2 +. Also had the mastectomy etc.
I chose to do the chemo and herceptin for 12 months because I want the least risk of it coming back. And it is doable with a little one (my boy is 18months old). Last Monday was my 3rd doseTCH , and I ain't going to lie, I was rubbish come Wednesday/Thursday/Friday but Saturday arvo we went for a bushwalk , and today I feel normal and know from previous rounds this is me til the next dose.
Hope this helps with decision making, but at the end of the day do what is right for you.
Happy to chat if you need.
Cheers
Haylee x