Go through these in order and stop at the first one that applies. If you are reading this for someone else, answer for them.
Call emergency services if you have trouble breathing, rapidly increasing throat or tongue swelling, heavy bleeding, vomiting blood, fainting, or an inability to swallow your saliva.
These are emergency symptoms rather than routine recovery.
Contact your healthcare team promptly if you have worsening pain, fever, increasing redness or swelling, a bad taste or discharge, repeated minor bleeding, or difficulty eating and drinking.
Seek urgent medical advice the same day if you cannot keep fluids down, pain is not controlled by the recommended treatment or bleeding continues despite the measures in your discharge instructions.
Attend the planned follow-up even if you feel well.
Every sign above is quoted from the sofidex article on Oropharynx lesion biopsy. If you are not sure, err upward — it is always reasonable to be checked.