I Am Presently A Survivor Of Cancer, I Have Some

i am presently a survivor of cancer, i have some residual effects such as vomiting and diahrea as well as back pain. I had a whipple, and head of pancreas removed a half of my colon and part of my stomach as my gallbladder removed. Also my jp drain is still on me from me due to a pancreatic fisure. It has been 7 months will this ever clear up. the surgeon feels that i will get better, who should i go to for second opinion for gastic problems and back pain