Obstetrics and gynaecology (also spelled as obstetrics and gynecology; abbreviated as Obs and Gynae, O&G, OB-GYN and OB/GYN is the medical specialty that encompasses the two subspecialties of obstetrics covering pregnancy, childbirth, and the postpartum period and gynaecology covering the health of the female reproductive system vagina, uterus, ovaries, and breasts. The specialization is an important part of care for women's health.