Welcome to the club that none of us wanted to join! This forum is full of supportive people though so you’re in the right place!
There’s a thread for people with HER2+ BC you should check it out as probably some crossover in the treatment you’ll be having! I’ll try to link it here but if it doesn’t work just search ‘HER2 and need some buddies’:
I hope your oncology appointment goes well. Write down questions before hand so you don’t forget anything in the moment! x