@Della, just the fact that you are on here, looking for help, shows that you are brave and strong. Even the strongest of us have down days, scared days, days when we don't know how to go forward. Allow yourself to feel your emotions and try to do what you can to keep a little bit of control. It might be going for a walk and giving yourself time to think, it might be filling the freezer with food for days when you don't feel up to cooking, it might be writing down all your fears and questions to ask your doctors/specialists and nurses. What ever you can do to keep a little bit of control for yourself. For me it was cutting my hair short before it fell out in great chunks. If it was going to come off anyway, then it was coming off on MY terms!
This disease is a bastard and journey we all travel is a hard one.
You are stronger than you realise, and you will make your decision because you have to. That is most of what people see as bravery, just doing what you have to because there is no other choice.
Don't feel bad taking up the time of the breast care nurse, that is what she is there for! Can you call them Monday morning before you see the oncologist? Maybe ask if you can talk to the oncology unit nurse manager to help you decide, they deal with people going through chemo everyday and see all outcomes.
Don't be afraid to ask heaps of questions of health professionals (part of their role is to provide you with all the info you need) , ask people going through similar things, ask friends and family for hugs, be kind to yourself - if there was any time when you deserve to put yourself first, now is it!.
Wish I could do more to help.
Take care xxxx