You should call your doctor if you have any of the following symptoms:
Unusually heavy or prolonged bleeding during your period (menstruation)
Bleeding from your vagina after intercourse
Bleeding from your vagina or blood spots on your underwear between menstrual periods
Unusually frequent urination
Pelvic or low back pain during intercourse or during menstrual periods
Call your doctor immediately if you experience severe pelvic pain, or if you develop severe bleeding from your vagina.