Go through these in order and stop at the first one that applies. If you are reading this for someone else, answer for them.
Contact the treating clinician promptly if diarrhea returns, symptoms fail to improve, fever continues, or drinking enough fluid becomes difficult.
Do not submit a repeat stool sample unless a clinician recommends it.
Routine follow-up may include reviewing symptom improvement, hydration, medicines, and the need for any future antibiotics.
Tell healthcare professionals about a history of C. diff , especially before starting another antibiotic.
This does not mean necessary antibiotics should always be avoided.
It helps the clinician choose the narrowest effective treatment and monitor for recurrence.
The article also says
During recovery, bowel movements may take time to return to their usual pattern.
Some people have temporary loose stools or bowel sensitivity after treatment.
New or persistent watery diarrhea should be reported rather than assumed to be part of recovery.
To reduce spread while diarrhea is active:
Wash hands thoroughly with soap and water after using the toilet and before eating.
Clean visibly soiled bathroom surfaces and follow product directions for a disinfectant effective against C. diff spores.
Avoid preparing food for other people when possible.
Wash soiled clothing and linens using the warmest appropriate setting.
Follow the care team’s advice about returning to work, school, or group settings.
People in the same household do not usually need testing if they have no symptoms.
They should use careful hand hygiene and seek medical advice if significant diarrhea develops.
Every sign above is quoted from the sofidex article on Clostridium difficile colitis. If you are not sure, err upward — it is always reasonable to be checked.