A client who is 5 weeks pregnant calls the clinic to report that her home pregnancy test is positive. She asks what she should be concerned about during the weeks before her first visit. Which signs and symptoms should the practical nurse (PN) tell the client to report immediately to the healthcare provider? (Select all that apply.)

1. Vaginal bleeding.
2. Decreased libido.
3. Urinary frequency.
4. Membrane rupture.
5. Severe headaches.