What Is the Difference Between Obstetrics and Gynecology

Obstetrics is the care of pregnancy, labor, delivery, and the weeks after birth. Gynecology is the care of the female reproductive system at every other point in life, including periods, birth control, infections, pelvic pain, and menopause. Most physicians train in both, which is why the two are joined as OBGYN. The same doctor can handle your annual exam one year and deliver your baby the next. Below is a clear look at what each field covers, where they overlap, and why that combination matters at Yorktown Health.

What Does Obstetrics Cover

Obstetrics begins before conception and continues through the postpartum period. It includes prenatal visits, ultrasounds, blood work, genetic screening, monitoring of high risk pregnancies, delivery, and recovery. The traditional model called for 12 to 14 in-person visits. In April 2025, the American College of Obstetricians and Gynecologists released guidance recommending that schedules be built around each patient's risk and circumstances rather than a fixed number. Pregnancy care is the obstetric side of the practice.

What Does Gynecology Cover

Gynecology covers everything outside pregnancy. Annual exams, Pap smears, HPV testing, contraception, STD testing, fibroids, endometriosis, PCOS, urinary incontinence, and menopause all sit here. It also includes surgery, from hysterectomy to minimally invasive procedures.

Obstetrics and Gynecology Compared

	Obstetrics	Gynecology
Focus	Pregnancy and birth	Reproductive health outside pregnancy
Typical patient	Pregnant or postpartum	Any age from the teens onward
Routine visits	Prenatal checks, ultrasounds	Well-woman exams, Pap smears
Common procedures	Delivery, cesarean section	Hysterectomy, laparoscopy
Time span	Roughly ten months	Adolescence through later life

Why One Doctor Trains in Both

Board certification requires 48 months of accredited residency in obstetrics and gynecology, according to the American Board of Obstetrics and Gynecology. The two fields share the same anatomy and the same patients. A fibroid found during a routine exam can affect a future pregnancy. A pregnancy complication can shape gynecologic health for decades.

Final Thoughts

Obstetrics and gynecology are two halves of one specialty, and knowing which half your question belongs to helps you book the right appointment. A well-woman exam is the usual starting point for either. Contact Yorktown Health in Lombard to schedule your next OB/GYN appointment.