Before the age of menopause, a woman's body is largely dependent upon her hormones. Various health problems may arise when there is an imbalance of hormones in the woman's body. O&G Specialists look into the women's intimate problems related to menstruation, vaginal dystrophy, infertility, family-planning, pregnancy and birth. Obstetrics and Gynaecology, also known as O&G or OB-GYN are the two surgical specialties dealing with the disease and conditions related to female reproductive organs and conditions associated with pregnancy. Obstetrics is the field of study concentrated on pregnancy, childbirth and the postpartum period while Gynaecology is the medical practise dealing with the health of the female reproductive systems and the breasts.