Miscarriage:

A threatened miscarriage or spontaneous abortion occurs in approximately 10% of pregnancies between 7 and 12 weeks of gestation. Symptoms include vaginal bleeding, abdominal cramps, and low back pain.
- Reviewed last on: 8/17/2007
- Melanie N. Smith, M.D., Ph.D., Department of Obstetrics and Gynecology, Brigham and Women's Hospital, Boston, MA. Review provided by VeriMed Healthcare Network.