A nurse is providing teaching to a client who is 2 days postpartum and wants to continue using her diaphragm for contraception. Which of the following instructions should the nurse include?

You should use an oil-based vaginal lubricant when inserting your diaphragm.

You should keep the diaphragm in place for at least 4 hours after intercourse.

You should have your provider refit you for a new diaphragm.

You should store your diaphragm in sterile water after each use.