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 severe pain, breathing difficulty, fainting, confusion, heavy bleeding, or rapidly worsening illness.
And for anyone, someone who:
Contact the surgical or medical team promptly for increasing abdominal pain, redness or drainage from an incision, fever, persistent vomiting, worsening diarrhea, jaundice, or difficulty eating and drinking.
A tube that stops draining, falls out, leaks, or causes increasing pain requires prompt contact with the treating team.
And for anyone, someone who:
After hospital treatment, follow-up depends on whether the gallbladder was removed, drained, or treated without a procedure.
If the gallbladder was not removed, follow-up is important because symptoms or inflammation can return.
The clinician may discuss later surgery once acute illness and other medical concerns have improved.
Routine follow-up should also review any bile duct stones, abnormal liver tests, pathology results, or medicines started during the hospital stay.
The article also says
After surgery, follow the care team’s instructions about wound care, bathing, lifting, driving, and returning to work.
Mild incision pain and fatigue can be expected early in recovery.
Some people notice loose stools or discomfort after fatty foods for a short time.
A gradual return to usual foods may be more comfortable, but a permanent low-fat diet is not required for everyone.
People who have a gallbladder drain need specific instructions for emptying the collection bag, keeping the tube secure, and recognizing blockage or infection.
Every sign above is quoted from the sofidex article on Acute cholecystitis. If you are not sure, err upward — it is always reasonable to be checked.