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 urgent or emergency care for:
Sudden or severe abdominal or pelvic pain
Fainting, marked dizziness, confusion, or severe weakness
Pelvic pain when you are or might be pregnant
Shoulder-tip pain with abdominal pain or possible pregnancy
Heavy vaginal bleeding
Repeated vomiting or inability to keep medicine down
High fever or rapidly worsening illness
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
Arrange prompt, same-day medical advice if you have new pelvic or lower abdominal pain together with unusual discharge, bleeding between periods, pain during sex, fever, or possible exposure to an STI.
Early assessment is important, but these symptoms do not necessarily mean you have PID.
These symptoms can suggest an ectopic pregnancy, a ruptured abscess, severe infection, or another condition needing urgent treatment.
The article also says
If you are being treated for PID, contact the service managing your care if symptoms are not clearly improving within about three days.
You should also return if symptoms come back after treatment.
Every sign above is quoted from the sofidex article on Pelvic inflammatory disease. If you are not sure, err upward — it is always reasonable to be checked.