I had same diagnosis except for stage. I was 2, but my grade was 8/9 which meant it was growing fast. My onco surgeon had me start chemo- 4 rds of T/C. It shrunk my tumor from 2.4 to undetectable with manual exam. I had a lumpetomy with 3 nides taken. All margins and nodes negative. Did 33 rads with 5 being boosts. Am on letrozole now. Chemo is a personal decision but given that i have 5 grown kids, 22 grands and 9 greats, i just felt selfish not doing all i could to put this in NED. Im healthy again and thats worth everything!!! Havent had a post op mamo yet- that will make it or break it but im going to keep on fighting until my last breath, hopefully at 90 at least, like my Mamma. Just whatever you decide, be at peace with it and youll know you made the right choice. #71, 21@💕

Thanks Laura, unfortunately we can't really afford all the eggs freezing etc so it's just really sad to know I'll be done for good.

A lot of great advice given here!
A few things to think about: lymph node involvement is concerning (your lymph nodes are the gateway for cancer to spread throughout your body, there is no way of knowing if some cells have already gotten out), tumor over 5 cm is very large. Onco type tests are all data and research based, they look at your chances to determine the likelihood of recurrence.
Not only have I had breast cancer, chemo, surgery and radiation, but I work as a nurse in a cancer center. It breaks our hearts when a patient declines treatment (chemo, radiation, endocrine etc) and comes back stage 4. I don’t want that for you!
You are young, and have little people who need you. If you want more kids, ask for a fertility referral. We have patients freeze eggs or embryos. There are options.
Yes chemo sucks, but it is doable, and it is temporary. Like others have said, there is so much medication support to manage the side effects. I never vomited once, I worked 3rd shift as an inpatient nurse, never called in once. I am TNBC, so I had chemo before surgery. When they did my surgery, no cancer, the chemo killed it. I am currently cancer free, and pray and hope to stay that way.
Maybe get a second opinion. That may help you decide, and feel good with your choice. I am not trying to scare, pressure or guilt you. It is a personal decision, and you have to do what is best for you!
Wishing the best for you, and hoping you find peace!

Please know that the list of side effects is unnerving, for sure! BUT a lot of that is a legal, cover their back-ends strategy by the manufacturers. For most of us, chemo is not as bad as what we had anticipated. Not fun- but most common side effects are anticipated, and there are usually meds, or tips and tricks to minimize. If they recommend chemo, understand that the protocols are based on a combination of what works, and what most people can tolerate. If there is a side effect that really has you struggling, they can consider a change in the timing, dosage, or even a change in the drug itself. Some people start and find that for whatever reason, they cannot complete the protocols. That doesn't happen too often, most of the time, we find that we can get through it- it is temporary. It is amazing to find that there is a strength and resilience in us that we tap into that we didn't realize was there. Sending loads of hugs while you navigate all the information, and make the decisions that are right for you.