Still in a daze breast cancer diagnosis

Hi busom buddies well what a week ! mri and mammogram last Monday  ultrasound and 4 biopsies last Friday  and results on weds were it's a small lump 13mm but a nastie ,grade 3 aggressive but hopeful it's not in the lymph. need a mastectomy cannot have radiotherapy(see my other post) but maybe chemo  meet back again this weds and 1st oncology appt Friday.  Whaf shall I ask them ? It just doesn't seem real .....I'm  just in a daze it sort of feels like the period between the passing away and the funeral does anyone else feel the same ? I gonna be positive tho. gonna get a nice new comfy sofa today xx