Birth control, also known as contraception, refers to methods and devices used to prevent pregnancy. It allows individuals to decide when or if they want to have children. There are a variety of birth control methods, each with different levels of effectiveness, side effects, and ways they work. 1. Types of Birth Control Methods A. Hormonal Methods Hormonal birth control methods work by altering a woman’s hormonal cycle to prevent ovulation, thicken cervical mucus, or thin the uterine lining to prevent pregnancy. Birth Control Pills (Oral Contraceptives): How it Works: Taken daily, birth control pills contain hormones (estrogen and progestin or progestin-only) that prevent ovulation. Effectiveness: 91% effective with typical use. Pros: Regulates menstrual cycles, reduces menstrual cramps, and lowers the risk of certain cancers. Cons: May cause side effects such as nausea, mood changes, and headaches. Contraceptive Patch: How it Works: A small patch worn on the skin that releases hormones (estrogen and progestin) to prevent pregnancy. Changed weekly. Effectiveness: 91% effective with typical use. Pros: Easy to use, only needs to be changed once a week. Cons: Can cause skin irritation and has similar side effects to birth control pills. Vaginal Ring (NuvaRing): How it Works: A flexible ring inserted into the vagina that releases hormones (estrogen and progestin). Worn for three weeks, then removed for one week. Effectiveness: 91% effective with typical use. Pros: Only needs to be changed monthly. Cons: Possible vaginal irritation, and similar side effects to other hormonal methods. Contraceptive Injections (Depo-Provera): How it Works: A progestin-only injection given every three months to prevent ovulation. Effectiveness: 94% effective with typical use. Pros: Long-lasting and doesn't require daily action. Cons: May cause irregular periods, weight gain, and a delay in return to fertility after stopping. Hormonal Intrauterine Device (IUD): How it Works: A small T-shaped device inserted into the uterus that releases progestin, which thickens cervical mucus and may stop ovulation. Effectiveness: 99% effective and lasts 3 to 6 years. Pros: Long-lasting, low maintenance, and very effective. Cons: Can cause irregular bleeding, and cramping during insertion.

Obstetrics is the branch of medicine that focuses on the care of women during pregnancy, childbirth, and the postpartum period. It includes the management of both routine and high-risk pregnancies, labor and delivery, as well as addressing complications that may arise during these stages. Obstetricians are specialized doctors who provide medical care in this field. 1. Scope of Obstetrics Obstetrics encompasses all aspects of pregnancy and birth, including: Prenatal Care: Monitoring the health of the mother and developing baby throughout the pregnancy. Labor and Delivery: Managing and assisting during childbirth. Postnatal (Postpartum) Care: Providing care to the mother and baby after birth. 2. Key Aspects of Obstetrics A. Prenatal Care Prenatal care is essential for ensuring the health of both the mother and baby during pregnancy. It involves regular check-ups, screenings, and interventions to detect potential problems early. Initial Prenatal Visit: A thorough medical history and physical exam are conducted, including blood tests and ultrasounds to confirm pregnancy and check for complications. Assessment of the mother's overall health, nutritional needs, and lifestyle recommendations. Regular Check-ups: These visits track fetal growth, check maternal weight, blood pressure, and monitor any signs of complications (e.g., gestational diabetes, preeclampsia). Ultrasound Scans: To monitor the baby’s development and detect any abnormalities. Screening Tests: Genetic tests, blood tests, and screening for infections (such as HIV, syphilis, and rubella) are part of routine prenatal care. Prenatal Education: Counseling on healthy eating, exercise, childbirth preparation, and breastfeeding. B. High-Risk Pregnancy Care Some pregnancies are considered high-risk due to maternal health conditions, complications during pregnancy, or issues with the baby. High-risk pregnancy care involves closer monitoring and more specialized care. Conditions that May Make a Pregnancy High-Risk: Pre-existing medical conditions such as hypertension, diabetes, heart disease, kidney disease, or autoimmune disorders. Advanced maternal age (over 35 years old). Multiple gestations (twins, triplets, etc.). Pregnancy complications like preeclampsia, gestational diabetes, or placenta previa. History of previous pregnancy complications (e.g., preterm labor, miscarriage). Fetal abnormalities or growth issues. Management of High-Risk Pregnancies: Frequent prenatal visits. Additional testing, such as fetal monitoring, amniocentesis, or genetic testing. Medication to manage conditions like high blood pressure or gestational diabetes. Planned delivery in a specialized facility if necessary.