Hi Olga,
Welcome to the site. You will find so many helpful people on this site. So many willing to help calm our fears. The nurses will guide you through everything you need to know. Write down any questions you may have for them and ask them. No question is silly. You will most likely receive an information pack about the chemo that you are having and be given any other information about what to do to get through the first few weeks. Allow yourself to do what you want. If you want to have a rest then do it. If you want and feel like doing something normal then that is okay too. You just need to learn what your limits may be and be aware of them. Just don't overdo anything.
All the best for tomorrow and feel free to ask any questions on here at anytime. Someone will always find you.
Take care.
Tracey xx