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 new chest pressure, squeezing, heaviness, or pain that lasts more than a few minutes, returns, or occurs with:
Shortness of breath
Cold sweating
Nausea or vomiting
Fainting or severe light-headedness
Pain in the arm, back, neck, jaw, or upper abdomen
Sudden extreme weakness
Also seek emergency help for severe breathlessness at rest, collapse, or unresponsiveness.
If someone is unresponsive and not breathing normally, call emergency services and begin CPR if you are able.
Do not drive yourself when a heart attack may be happening.
And for anyone, someone who:
has chest pain, tightness or pressure lasting more than a few minutes
Other emergency signs, for anyone
Someone who is struggling to breathe, gasping, choking, or cannot get words out
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
Arrange prompt medical assessment for new chest discomfort with activity, unexplained breathlessness, repeated palpitations, fainting, or a clear decline in stamina.
And for anyone, someone who:
is getting rapidly more short of breath, or has gained several pounds in a few days with swelling
3
Does any of this apply?
Book an appointment
Routine follow-up is appropriate for medication reviews, blood pressure or cholesterol monitoring, stable long-term symptoms, and discussions about exercise, pregnancy, contraception, or menopause treatment.
Every sign above is quoted from the sofidex article on Heart disease and women. If you are not sure, err upward — it is always reasonable to be checked.