Go through these in order and stop at the first one that applies. If you are reading this for someone else, answer for them.
Seek emergency help for severe or rapidly worsening abdominal pain, heavy bleeding, fainting, new chest pain, difficulty breathing, confusion, or a stoma that becomes black or dark purple.
Contact your surgical team promptly for increasing wound redness, drainage, worsening pain, repeated vomiting, persistent diarrhea, inability to keep fluids down, fever, or a swollen abdomen.
Also call if your wound opens, you stop passing gas or stool after bowel function had returned, or your stoma stops working.
These are different from routine recovery concerns and should not wait for a scheduled appointment.
And for anyone, someone who:
Every sign above is quoted from the sofidex article on Small bowel resection. If you are not sure, err upward — it is always reasonable to be checked.