I am so sorry to hear of your diagnosis -- it is a rare cancer and very scary, I just lost my mother, but not without a fight. We had the BEST doctor, Dr. Lenz, from USC... did 6 different lines of chemo and radioactive implants, none of which took, but my mother's cancer was very advanced when they found it.
Tips to make life easier: physical therapy -- get a prescription, might be government paid; healthy gut - if you are experiencing lots of diarrhea, take pancreatic enzymes (expensive, but worth it, called Creon), take 1 billion (that's right, billion, not million) probiotics/day -- it will help with digestion, healthy gut, etc. Stay healthy and fat -- treatments cause weight loss and you will lose motivation to eat because the side effects of eating aren't fun... ultimately, my mother passed due to malnutrition, not tumor burden.
If you ever have any questions, feel free to contact me, I want to stay very involved in this cause, and I know a lot of info because my mother was a guinea pig for almost 2 years...
Good luck, stay strong, healthy attitude is everything -- my mother was not an optimist, and I believe it would have made a huge difference.