OG full form in medical term is Obstetrics & Gynecology. Where Obstetrics is the field of study on the topics such as pregnancy, childbirth, and the postpartum period. Gynaecology is a field of study which is concentrated on the diseases and abnormalities of the female reproductive system, childbirth, and postnatal period. A person can pursue Obstetrics & Gynecology separately as well and become an obstetrician or gynaecologist.
From the beginning of the pregnancy to childbirth, everything is monitored by an obstetrician. An obstetrician examines and monitors pregnant women, carries out screening tests with ultrasound, conducts delivery, and also provides after-delivery care as well. On the other hand, as mentioned earlier, Gynecology is a field of study where the main focus is the female reproductive system including breasts. A gynaecologist provides services related to reproductive and sexual health complications and issues. If someone is suffering from any reproductive system disorder such as menstruation, infertility, endometriosis, cysts or anything like that, then you should seek help from a gynaecologist. They will diagnose the disorder or health issue, and refer you for proper treatment.