A medical doctor who specialize in this field is called an obstetrician-gynecologist or OB-GYN, who has expertise in female reproductive health, pregnancy and childbirth.  Obstetrics specifically covers,pregnancy, childbirth and pospartum period; while Gynecology covers the health of the female reproductive system, the vagina, uterus, ovaries and breasts. Subspecialties include, Maternal-Fetal Medicine, Reproductive Endocrinology and Infertility, Gynecological Oncology, Family Planning, Menopausal and Geriatric Gynecology and others.