Both obstetricians and gynecologists are trained to deal with female reproductive health, which includes pregnancy and childbirth, and treating diseases affecting the female reproductive organs like ovaries, fallopian tubes, uterus, and cervix. Obstetrics and gynecology are different branches of medicine but are combined together to provide comprehensive care for women. Obstetrics mainly focuses on pregnancy, delivery, and postpartum care, while gynecology focuses on female reproductive organs including breasts.