Go through these in order and stop at the first one that applies. If you are reading this for someone else, answer for them.
Seek emergency care for difficulty breathing, chest pain, fainting, confusion, coughing up blood, or sudden painful swelling in one leg.
Contact your surgical team promptly for increasing redness, warmth, drainage, worsening pain, fever, wound opening, or new or increasing swelling.
Also call if a drain stops working unexpectedly or suddenly fills with blood.
After flap reconstruction, seek urgent advice if the flap changes colour, becomes unusually cool, or rapidly swells.
Blood-flow problems are time-sensitive.
Questions about stable scars, numbness, shape, implant checks, or returning to activities can usually wait for a scheduled appointment unless something changes suddenly.
Every sign above is quoted from the sofidex article on Breast reconstruction. If you are not sure, err upward — it is always reasonable to be checked.