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 emergency care for:
Bleeding that is heavy, rapidly worsening, or will not stop
A significant head injury, especially with a known bleeding disorder
A sudden severe headache, confusion, fainting, weakness, seizure, or repeated vomiting
Vomiting blood, coughing up blood, or passing black, tar-like stool
Severe abdominal, back, neck, or groin pain with swelling or weakness
Trouble breathing, chest pain, or signs of shock such as cold, clammy skin
Use your local emergency number if these symptoms are severe.
If you have an emergency treatment plan, follow it while arranging help.
And for anyone, someone who:
is bleeding heavily and it will not stop with firm pressure
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 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 a healthcare professional promptly for repeated nosebleeds, unexplained large bruises, blood in urine or stool, a painful swollen joint, or bleeding after a procedure.
Heavy menstrual bleeding that causes dizziness, breathlessness, marked weakness, or very frequent product changes also needs prompt assessment.
Do not wait for a routine appointment if bleeding is active or symptoms suggest internal bleeding.
3
Does any of this apply?
Book an appointment
Routine follow-up is appropriate for reviewing stable symptoms, treatment supplies, iron levels, planned procedures, contraception, pregnancy planning, or safe activities.
Every sign above is quoted from the sofidex article on Bleeding disorders. If you are not sure, err upward — it is always reasonable to be checked.