Newly diagnosed with grade 2 IDC, grade 3 post surgery

I am a 57 year old lady who Found a lump in my right breast around middle of August 2021. I was due my mammogram on 1st September so wasn't overly concerned as had cysts drained in the past.  Attended my mammogram and pointed out to the radiographer I thought I could feel a lump so advised to see Gp as mammogram results would be another 3 weeks. Attended Gp appointment on 3 rd September referred to breast team,  appointment for 5 th September arranged, very prompt I have to say. 

Had ultrasound and biopsies taken on 5 th September then went on holiday. Came back to appointment for biopsy results on 27 th September but had also received my mammogram results which basically said everything ok see you in 3 years!

Attended for biopsy results which shown grade 2 IDC lump 1.9 cm to right breast.  Referred for MRI to confirm size only to get results that something was showing on my thyroid, second lump in the same breast and something in my armpit! Absolutely gutted and a nervous wreck! 
Following an MDT made up of different professions overseeing and discussing my case they advised second look ultrasound. I attended  for separate ultrasounds. The  Thyroid ultrasound shown  nothing of concern, the breast ultrasound shown the second lump as a cyst  therefore drained to dryness and the armpit lump didn't show anything of concern too, how relieved was I !

Fnally I had a lumpectomy and sentinel node biopsies done on 27 th November  2021 and from the tissue removed and  sent for testing it shows a grade 3 IDC not grade 2 and a 2.2 cm lump, fortunately the 3 sentinel nodes removed are all negative.

I am now waiting the oncotype DX results to see if I need chemo. I have tried looking to see if there is anybody else on here with the same cancer that has not had chemo for this. As highlighted I know everybodies treatment plan is different.

I am also told that my cancer is ER positive and HER negaive and that I will need radiotherapy and hormone therapy too.