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 urgent or emergency care for:
Severe or worsening chest or abdominal pain
Difficulty breathing
Vomiting blood or material resembling coffee grounds
A large amount of black, tar-like stool or fresh blood
Fainting, marked weakness, confusion, or difficulty waking
A swollen or rigid abdomen
Use the facility’s emergency contact details when available.
If symptoms are severe, call local emergency services rather than waiting for an appointment.
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
Contact your healthcare team promptly for persistent vomiting, increasing chest or abdominal discomfort, swallowing that is worse than before, fever, or mild symptoms that do not improve as expected.
Every sign above is quoted from the sofidex article on Endoscopy. If you are not sure, err upward — it is always reasonable to be checked.