Feeling lost

I am newly diagnosed and just feel lost. My appointments and tests have been so close to each other. I have had mammogram, ultrasound, biopsy of the breast, FNA of my lymph node, a pet scan and having a mri tomorrow. My diagnosis is invasive carcinoma NST (invasive ductal carcinoma), grade 3, triple-positive (ER+/PR+/HER2+), with associated high-grade DCIS. The ki-67 is 60%. I have been told the I will have 4 months of Chemo, then surgery, radiation and long term medication after.

I met with the breastcare nurse and found her extremely unhelpful. I just don’t know what to expect and how to feel at the moment. Has anyone been on a similar journey who can tell me what to expect?