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 for severe difficulty breathing, chest pain, coughing up blood, fainting, or a painful swollen leg with sudden breathlessness.
These can be signs of a serious blood clot or another emergency.
Between visits, contact your surgical team promptly if you have increasing redness, warmth, swelling, drainage, a bad smell, fever, a wound that is opening, or pain that is getting worse rather than better.
Seek urgent assessment if one breast suddenly becomes much larger, firmer, or more painful than the other.
Also seek urgent advice if the nipple or breast skin becomes unusually pale, dark, cold, or blistered.
And for anyone, someone who:
Attend routine appointments for wound checks and recovery advice.
Every sign above is quoted from the sofidex article on Breast reduction. If you are not sure, err upward — it is always reasonable to be checked.