Hey Zig. Sorry about your husband. I also had an emergency surgery for blockage with a huge tumor, in 2016. I was totally blocked and vomiting every 2 minutes for an entire day until I realized, hey, I don't think this is food poisoning.
I was badly anemic, and did not stop being anemic until 2 months after I completed chemo. I had one blood transfusion after surgery.
It's good he's getting FOLFOX. I am sorry for the aggressive nature of the monster inside your husband.
You are going to be scared out of your mind, I doubt anyone in your situation could not be.
I do not know where your husband is receiving treatment, but it seems pretty standard to try and get a second opinion at a major cancer treatment center...
University of Texas MD Anderson Cancer Center, Houston
Memorial Sloan Kettering Cancer Center, New York City
Mayo Clinic, Rochester, Minnesota
Dana-Farber/Brigham and Women's Cancer Center, Boston
UCLA Medical Center, Los Angeles
Moffitt Cancer Center and Research Institute, Tampa, Florida
Seattle Cancer Care Alliance/University of Washington Medical Center
Johns Hopkins Hospital, Baltimore
UCSF Medical Center, San Francisco
Massachusetts General Hospital, Boston
Hospitals of the University of Pennsylvania-Penn Presbyterian, Philadelphia
Stanford Health Care-Stanford Hospital, California
Northwestern Memorial Hospital, Chicago
Barnes-Jewish Hospital/Washington University, St Louis
University of North Carolina Hospitals, Chapel Hill
New York–Presbyterian University Hospital of Columbia and Cornell, New York City
USC Norris Cancer Hospital-Keck Medical Center of USC, Los Angeles
Wake Forest Baptist Medical Center, Winston-Salem, North Carolina
City of Hope, Duarte, California
If possible... I know not everyone has the resources and insurance and time and money to travel, etc. If you feel confident in your husband's care, that is good, also. The treatment terms and protocol are all super confusing, on top of dealing with cancer.
Take it day by day and keep as positive as possible. I never would have kept my sanity without this forum and the cancer superstars who post and advise here. Best wishes to you and your family.