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 trouble breathing or choking while swallowing the capsule, severe abdominal pain with repeated vomiting, or collapse.
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
Seek urgent medical advice for:
Increasing or persistent abdominal pain
Abdominal swelling with vomiting
Inability to pass stool or gas
Fever with abdominal symptoms
Heavy rectal bleeding, dizziness, or fainting
3
Does any of this apply?
Book an appointment
Contact them before any planned MRI if passage has not been confirmed.
The article also says
Contact your healthcare team if the recorder stops working, sensors come loose, you have preparation questions, or you are unsure whether the capsule passed.
Every sign above is quoted from the sofidex article on Capsule endoscopy. If you are not sure, err upward — it is always reasonable to be checked.