Pregnancy: Conception – Maternity – Trimester
Month 5 of pregnancy: baby movement and anatomy scan milestone

Month 5 of pregnancy: baby movement and anatomy scan milestone

Why month 5 can feel like a major milestone The fifth month is usually within the second trimester, a stage many people experience as a period of transition. The uterus is rising higher in the abdomen, the pregnant belly may be more visible, and fetal growth is accelerating. The baby is not simply getting larger; […]

Month 3 of pregnancy: end of first trimester and key milestones

Month 3 of pregnancy: end of first trimester and key milestones

Where month 3 fits in pregnancy dating Pregnancy dating can be confusing because it is measured from the first day of the last menstrual period, not from the date of conception. This means that by the time a pregnancy test is positive, a person is often already considered about 4 weeks pregnant. According to standard […]

Month 4 of pregnancy: second trimester begins and energy changes

Month 4 of pregnancy: second trimester begins and energy changes

Where month 4 sits in pregnancy dating Pregnancy is usually dated from the first day of the last menstrual period, not from conception. Using this convention, the American College of Obstetricians and Gynecologists defines the second trimester as beginning at 14 weeks and ending at 27 weeks and 6 days. Month 4 generally overlaps with […]

Month 2 of pregnancy: body changes, baby growth, and early symptoms

Month 2 of pregnancy: body changes, baby growth, and early symptoms

Where month 2 fits in pregnancy dating Pregnancy is typically dated from the first day of the last menstrual period, not from conception. That means by the time a home pregnancy test is positive, many people are already around 4 to 5 weeks pregnant. Month 2 generally covers weeks 5, 6, 7, and 8, though […]

Month 1 of pregnancy: symptoms, embryo development, and what to expect

Month 1 of pregnancy: symptoms, embryo development, and what to expect

How month 1 is counted Pregnancy is usually measured by gestational age, which starts on the first day of the last menstrual period. This convention is useful because the exact day of fertilization is often unknown. In a typical 28-day menstrual cycle, ovulation and conception occur around week 2 of gestational age, although cycle length […]

Preparing for birth in third trimester

Preparing for birth in third trimester

Understanding the third trimester: what your body is preparing to do The third trimester begins around week 28 and continues until birth, which commonly occurs near 40 weeks but can vary. During this period, fetal weight gain accelerates, the uterus expands upward and outward, and the placenta continues to support oxygen and nutrient exchange. Many […]

Work adjustments by trimester

Work adjustments by trimester

A trimester-based approach to working while pregnant Pregnancy is dynamic. Cardiovascular output increases, plasma volume expands, ligaments become more lax, the center of gravity shifts, and respiratory reserve gradually narrows. These normal adaptations may make certain job tasks feel different from one trimester to the next. A person who can comfortably stand for a full […]

Travel safety by trimester

Travel safety by trimester

Why trimester matters for travel planning Pregnancy is not a single, static risk state. Physiologic and obstetric factors shift over time, which is why trimester-specific planning is helpful. ACOG notes that the best time to travel is often mid-pregnancy, from 14 to 28 weeks, because many common early symptoms have improved and later-pregnancy complications are […]

Baby size and fetal development milestones by trimester

Baby size and fetal development milestones by trimester

Understanding pregnancy dating and fetal size measurements Pregnancy is usually dated from the first day of the last menstrual period, even though conception typically occurs about two weeks later. This is why a person who is described as 8 weeks pregnant has usually had about 6 weeks of embryonic or fetal growth. Early ultrasound can […]

Exercise in first second and third trimester

Exercise in first second and third trimester

Core principles for exercising safely in pregnancy Professional guidance from obstetric organizations generally supports physical activity during pregnancy for people without contraindications. A common target is 150 minutes per week of moderate-intensity aerobic activity. “Moderate intensity” means breathing and heart rate increase, but conversation remains possible. Many people use the talk test rather than a […]