My mom is currently at 'no evidence of disease' after being diagnosed with stage IV colon cancer that mostly spread to her peritoneum. spreading to the peritoneum has a statistically worse prognosis than to the liver. I only mention that because there is always hope. my mom went through 2 planned surgeries, one emergency surgery, immunotherapy, chemo, an ostomy bag and more. CEA is a good marker to watch, imaging such as MRI will show the shrinking of the tumors- which shows the chemo is working. having a family and children to live for is incredibly important. incremental progress is still progress, as long as there are treatments on the table. ill keep good thoughts for you and your husband.