@Twiggy34B
Like @kmakm - I had my sister in law and husband sit in on all my early appointments before & after surgery (tho Hubby was totally silent & probably couldn't hear it all! LOL) - for support and 'extra ears' - like Kate, I was 'on my own' for all the actual procedures - core biopsy, radiation etc.
Your boob WILL hurt after the core biopsy tho - so it could be good having someone to drive you home .....
More recently (because we live on the coast & SIL is in Sydney) I've gone on my own to all appointments (as hubby is quite deaf & not really 'up with' my ongoing treatment) - and I've not always asked enough questions - specially on my first Onc appointment last week! DUH! Having someone with you really does help. You could ask if the Breast Cancer Nurse could sit in - I am sure that could be arranged & she would be a wealth of knowledge too, on what to mention? (Or talk to her before going to the appointment re what to ask?)
With any of your appointments - Write a list of ANYTHING that pops into your head in the weeks/days leading up to it .... take it with you. Ask the questions.
All the best - thinking of you xx