Hey, Don't get discouraged. Your youth is a big plus and there are alot of other chemo options besides the ones you have tried. Find a cancer center near you and get a new opinion on chemo options, look into clinical trials, there is alot of stuff going ON!!! :) If you are into nutrition at all get Mina Dobic's book, My Beautiful Life. I believe some oncologists can be a little more negative than they need to be just so they don' t get their patients hopes up. Statistics are just a way to keep score...they mean nothing to your individual case! Check into the new treatments that stop blood vessel formation, anti andiogenics.
All it takes is for one thing to work well in your specific case. Keep searching!