Thanks for the query.
I understand your concern.
Usually minor cuts can heal in one to two weeks.
As your girlfriend is having pain even two weeks after intercourse, better to rule out the possibility of secondary infection or deeper cut.
Let her consult your doctor and get examined. By clinical examination the exact cause of the pain can be identified and treatment can be planned accordingly.
These Q&A’s are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.