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
Call emergency services for severe chest or abdominal pain, major breathing difficulty, fainting, vomiting blood, or black, tar-like stools.
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 surgical team promptly for increasing wound redness or drainage, fever, worsening pain, repeated vomiting, worsening swallowing, returning reflux, or inability to progress through the recommended diet.
Seek urgent medical assessment if you cannot swallow liquids, have signs of dehydration, develop new shortness of breath, or have persistent abdominal swelling and vomiting.
And for anyone, someone who:
has a wound that is hot, spreading red, or leaking pus
Every sign above is quoted from the sofidex article on Anti-reflux surgery. If you are not sure, err upward — it is always reasonable to be checked.