The Second Trimester: Your Complete Guide to Weeks 13–27
Often called the 'golden trimester' — what to expect, key tests, and how to stay healthy.
Welcome to the Second Trimester
For most pregnant women, the second trimester brings welcome relief. Morning sickness usually fades, energy returns, and the risk of miscarriage drops significantly. You'll begin to look visibly pregnant and, around week 18–22, feel your baby move for the first time.
Physical Changes
Your uterus expands rapidly during these weeks. You may notice a darkening line down your abdomen (linea nigra), round ligament pain as the uterus stretches, and growing breasts. Nasal congestion and bleeding gums are common due to increased blood volume.
Key Appointments and Tests
- Anatomy scan (18–22 weeks): An ultrasound that checks fetal organs and can reveal the sex if desired.
- Quad screen (15–20 weeks): A blood test screening for chromosomal conditions.
- Glucose challenge test (24–28 weeks): Screens for gestational diabetes.
- Regular prenatal visits: Usually every 4 weeks during this trimester.
Feeling Baby Move
First-time mothers typically feel movement (quickening) between weeks 18–22. It starts as fluttering or bubbles. By week 24–25, movements become more distinct. Your provider may ask you to track "kick counts" later in pregnancy.
Nutrition Focus
Calcium needs increase — aim for 1,000 mg daily from dairy, fortified foods, or leafy greens. Iron-rich foods remain important as blood volume expands. Continue your prenatal vitamin with folate and DHA.
Exercise and Rest
Most forms of moderate exercise are safe and beneficial — walking, swimming, and prenatal yoga all help manage weight gain and prepare your body for labor. Avoid lying flat on your back after week 20, as this can restrict blood flow.