Genomic Testing experiences

Hi all, 

I’m a 46 year old mother of two older teenage boys and was diagnosed with breast cancer in April 2025. I have since had a lumpectomy and sentinel node clearance and been advised I had Stage 1 Grade 2 invasive ductal carcinoma with lobular features with clear margins and no node involvement. My tumour was 16mm and is ER/PR positive and HER2 negative. I saw my medical oncologist on Friday and we discussed will be radiation and hormone therapy with Tamoxifen for up to 10 years if I tolerate it. 
My online prediction is that chemo will be of no benefit to me but my oncologist did discuss the genomic testing and that it was my decision as to whether I have it or not but if I did want to go ahead I would need to make a decision quickly as I am already nearly 3 weeks post op.

I am looking for advice or peoples experiences as to if they were offered the test and what they did. I know everyone is different and that the cost would be prohibitive for a lot of people. We can afford to do it but I’m unsure as to if it is a good idea or not. 

thank you in advance for any advice or experience you’d like to share and good luck with all your journeys x