ditto to going to the Sol goldman message board on the Johns Hopkins site. You can post anything about pc and get many responses daily.
Many your age have had pc and Whipple. It gets much better after a tough recovery for most.
Hang in there and seek advice from nutritionist if you haven't already done so. Drink yogurt "protein" shakes made with whey protein powder to help with building muscles. Talk to nutritionist or gastroenteroligist about possible need for pancreatic enzyme supplements if you have trouble digesting fats, sugars, and/or protein. Ask about probiotics as many eliminate diarreah and can regain lost weight when taking enzymes with probiotics (they keep intestinal health optimal) both very important. Look up info about R+Alpha Lipoic Acid (antioxidant) as it increases energy level (mimics insulin and uploads sugar found in blood to muscles) and has many other health benefits.
Good luck with everything. Hope you recover quickly. Sonnie