Obstetrics and Gynaecology are the two fields of medicine that are completely dedicated to women and women's health only. Gynaecology specializes in female reproductive system, from its diseases to any hormonal imbalance and all the way to all related cancers and surgical interventions etc., whereas the field of Obstetrics maintains the wellbeing of females during pregnancy, including all its procedures and complications.
https://www.fairview.org/specialties/obstetrics-and-gynecology-services
https://www.webmd.com/women/guide/what-to-expect-from-an-ob-gyn-visit#1
https://www.dha.gov.ae/en/DubaiHospital/Pages/Obstetrics.aspx
https://www.medicalnewstoday.com/articles/288354#when_to_see_one
https://www.health.harvard.edu/womens-health/do-you-need-to-see-your-gynecologist-every-year
Obstetrics and Gynaecology Nutritional plans to get your best health during different female life stages.