A nurse is providing education regarding abnormal signs and symptoms of pregnancy at the client's 20 week appointment. Which of the following education topics should the nurse include in their teaching?

Report weight gain of 1 pound per week.

Urinary frequency is normal and should only be reported if you have burning.

Report any increase in vaginal discharge or leaking of fluid.

Only report severe nausea and vomiting if it lasts longer than 7 days.