Go through these in order and stop at the first one that applies. If you are reading this for someone else, answer for them.
Emergency care is appropriate for severe illness, confusion, fainting, breathing difficulty, or other signs that an infection may be affecting the whole body.
After an injury, seek medical assessment sooner if there is severe pain, marked swelling, deformity, inability to use the limb normally, or concern for a fracture.
Contact a clinician promptly for:
Arrange routine follow-up if symptoms are not improving after activity changes and basic self-care, keep returning, disturb sleep, or interfere with normal movement.
Follow-up is also appropriate if the diagnosis is uncertain or there is ongoing weakness, numbness, or loss of motion.
The article also says
During recovery, increase activity gradually.
If symptoms return, review recent changes in exercise, work tasks, footwear, or pressure on the area.
A physical therapist, occupational health clinician, or sports medicine professional may help adjust technique and reduce repeated stress.
Every sign above is quoted from the sofidex article on Bursitis. If you are not sure, err upward — it is always reasonable to be checked.