I'm sorry to hear about your diagnoses. I hope you're doing ok.
How are you feeling?
Before starting an exercise program I would suggest that you discuss this first with your GP and cancer treatment team. They should be able to able to let you the all clear. I wouldn't advise starting an exercise without getting the all clear first.
Having said that, exercise during cancer treatment (pancare.org.au) has some guidelines and some tips.
What you can do and where you start will depend on current level of fitness.
Best of luck
Exactly as Sean wrote check with medicos first,I was encouraged to walk while waiting for Whipple,but that was after extensive testing to see if I was eligible for surgery and after a stent was put in before that I was in a wheelchair no strength to walk.
Be part of this supportive community