Go through these in order and stop at the first one that applies. If you are reading this for someone else, answer for them.
1
Is any of this happening now?
Call 911
Seek emergency care for:
Severe or rapidly worsening abdominal pain
A swollen abdomen with an inability to pass stool or gas
Persistent vomiting or an inability to keep fluids down
Vomiting blood, heavy rectal bleeding, or black tar-like stool with weakness
Fainting, confusion, severe breathlessness, or cold and clammy skin
These may indicate bowel obstruction, major bleeding, perforation, or another serious complication.
Other emergency signs, for anyone
Someone who is struggling to breathe, gasping, choking, or cannot get words out
Someone who has chest pain, tightness or pressure lasting more than a few minutes
Someone who has sudden weakness or drooping on one side of the face or body, slurred speech, or sudden confusion
Someone who is unconscious, or cannot be woken
Someone who is bleeding heavily and it will not stop with firm pressure
Someone who has had a seizure that will not stop, or does not wake up afterwards
Someone who has lips or skin that look pale, blue, grey or blotchy
Someone who you believe has taken an overdose or swallowed something poisonous
2
Is any of this happening?
Be seen today
If you are receiving treatment, contact your cancer team promptly about a fever, uncontrolled diarrhea, repeated vomiting, increasing pain, poor fluid intake, or side effects that are difficult to manage.
Use the urgent contact instructions provided by your treatment team.
3
Does any of this apply?
Book an appointment
Arrange a routine medical appointment if you have persistent abdominal discomfort, unexplained weight loss, repeated nausea, a lasting change in bowel habits, unusual tiredness, or possible blood in your stool.
These symptoms often have causes other than cancer, but they should be assessed if they continue or worsen.
And for anyone, someone who:
has noticed a lump, a mole that has changed, or unexplained weight loss
Every sign above is quoted from the sofidex article on Small intestine cancer. If you are not sure, err upward — it is always reasonable to be checked.