ER+, HER2+ breast cancer. New here, Nervous, have questions

ldp

was diagnosed with Stage 1, grade 2 er+, her2+ breast cancer. No lymph node involvement. Very small. Lumpectomy, 16 rounds of radiation, currently doing immunotherapy (session 9 of 18)and on Letrozole. My reason for being nervous…..although protocol called for me to do chemo, my oncologist felt I would be a good candidate for a Dana farber trial, hence the no chemo. Obviously, I’m happy about that, but still worried. My doctor felt like they didn’t want to over-treat me. Anyone else been in this same situation?

ldp