I understand how scary this is to you. I went through all of that last year. I wish you all the very best with your treatments.
I would suggest you always take someone you can trust with you to your doctor's appointments.
Always ask questions - no matter how silly they seem - this is YOUR journey and YOU need to understand everything that happens to you.
Don't be afraid - be positive - think of life not death.
Learn some relaxation exercises and don't forget to pamper yourself along the way as a "reward" that you have passed that step, then onto the next.
Take one day at a time and don't worry about what may be - know that you will be okay and you aren't alone.
Good luck with everything.
Hugs to you
Sandy