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 immediately for trouble breathing, swelling of the tongue or throat, collapse, severe confusion, or signs of a rapidly developing allergic reaction.
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 widespread hives, marked facial swelling, persistent vomiting, unusual bleeding, or symptoms that concern you after an injection.
3
Does any of this apply?
Book an appointment
Contact the program during routine hours if injection-site pain or swelling is worsening rather than improving, fever or other effects are not settling, or you have questions before the next dose.
Also report any new medical diagnosis, pregnancy, medicine change, or vaccination received elsewhere.
Every sign above is quoted from the sofidex article on Hyperimmunization. If you are not sure, err upward — it is always reasonable to be checked.