Marra Francis, M.D., FACOG, has a private practice for gynecology in San Antonio, TX. A mom of three, she is also a national speaker for Myriad Genetics and a physician volunteer for Basic Health International (foreign medical work in El Salvador) and a speaker for the "Worth The Wait" teen sex health program. Dr. Francis is the former chair of the ob-gyn department at Memorial Hermann Hospital in The Woodlands, TX and she was also featured in Cord Blood Registry's "Physician Spotlight" 2010.  A frequent contributor to www.MommyMDGuides.com, her tips are featured in The Mommy MD Guide to Pregnancy and Birth and The Mommy MD Guide to Your Baby's First Year.