I had the same type of BC. I ended up getting a lumpectomy, then chemo, then 33 days of radiation. This was 8+ years ago. My tumor very small and there was a bit of cancer in a lymph node, which is why my onc. suggested those choices.
It's hard, I know. Do you have time to get a second opinion? Most people suggest staying away from the internet because you will see things that scare you.
It's hard, but you will get through this. My prayers are with you for a speedy recovery.