The second trimester of pregnancy covers weeks 13 through 27 and is often considered the most comfortable. Early symptoms like nausea and fatigue tend to ease, and many women notice a return of energy and appetite. At the same time, your baby is growing rapidly, your body is adjusting to support that growth, and your prenatal care shifts to focus on detailed screening and steady monitoring.
Understanding what is happening during these weeks can help you feel prepared, ask better questions at your appointments, and know what to discuss with your provider.
How Your Body Changes During the Second Trimester
As your uterus expands and blood volume increases, you may notice new physical changes even as you start feeling better. Every pregnancy is different, but there are several common experiences during this stage.
Round ligament discomfort is one of the most frequently reported symptoms. It has been described as a brief, sharp pulling sensation in the lower abdomen or groin, especially when you change positions quickly. This is caused by normal stretching of the ligaments that support your uterus. It is worth mentioning at your visit if it becomes frequent or intense.
Back pain and pelvic pressure are also common as your posture shifts and your center of gravity changes. Supportive shoes, gentle stretching, and careful lifting can all help.
Many women experience constipation and heartburn because pregnancy hormones slow digestion. Staying hydrated, eating more fiber, and having smaller meals often help. You may also notice nasal congestion, nosebleeds, or skin changes like darkening around the nipples, a vertical line down the abdomen, or stretch marks. These are normal and related to increased blood flow and hormonal shifts. Mood changes can also come up during this time. Even with the excitement of pregnancy, it is normal to feel more emotional, especially if sleep is disrupted. If anything feels unusual or disruptive, bring it up at your prenatal visit.
Baby Milestones in the Second Trimester
Your baby is developing quickly during these weeks, and many parents enjoy this phase because growth becomes easier to see and feel.
Early in the second trimester, the baby’s facial features become more defined, and the baby begins practicing swallowing and smoother movements. As the weeks progress, you may start to feel fluttering sensations that gradually become recognizable as kicks and rolls. First-time parents sometimes feel movement a bit later, and that is completely normal.
Brain development and hearing also accelerate during the second trimester. Later in this stage, the baby may respond to sounds. The skin is still thin, and fat stores slowly increase to support temperature regulation after birth.
One of the biggest emotional highlights of this trimester is the anatomy ultrasound, which gives families a detailed look at how the baby is developing.
What Your Prenatal Visits Cover
Prenatal care during the second trimester is focused on tracking the growth of your baby, monitoring your health, and completing recommended screenings. Most visits include checking your blood pressure, reviewing your weight trend, and collecting a urine sample when appropriate. Your provider will also listen to the baby’s heartbeat and ask about symptoms like cramping, headaches, swelling, or discharge changes.
As your pregnancy progresses, your provider may begin measuring your abdomen to track growth. You will also discuss fetal movement, nutrition, sleep, and physical activity. This is a great time to ask questions about what kinds of exercise are safe, what to expect at the anatomy scan, and when to start thinking about childbirth classes.
What to Expect from the Anatomy Scan
The anatomy ultrasound is typically done around the midpoint of pregnancy and is one of the most detailed imaging appointments you will have. During this scan, the technician takes measurements and images of the baby’s major structures, including the brain, spine, heart, stomach, kidneys, and limbs. The placenta location and amniotic fluid level are also assessed. Learn more about what these appointments involve through our ultrasound services page.
If the baby’s position makes it difficult to get clear images, you may be asked to shift positions, drink water, or return for a follow-up. Many follow-up scans happen simply because the baby was not in the best position for full imaging. Your provider will walk you through the results and any next steps.
If you want to learn the baby’s sex, this is often when it can be determined, depending on what is visible. If you prefer not to know, let your care team know ahead of time.
Common Screening and Lab Work
Your provider will guide you through recommended screening based on your medical history and pregnancy needs. Some blood work may happen earlier in pregnancy, and additional testing may follow depending on results. If you have questions about what types of screening are available, our genetic screening page provides additional detail.
One of the most common screenings in the second trimester is for gestational diabetes, which usually takes place toward the later weeks of this trimester. Gestational diabetes can develop even in women with no prior history, so this screening is an important part of routine prenatal care. If results suggest elevated blood sugar, your provider will explain what follow-up testing involves and how the condition is managed.
If you have symptoms such as itching, unusual discharge, urinary discomfort, or persistent headaches, your provider may recommend additional targeted testing. The goal is not to over-test but to catch problems early and treat them safely.
When to Call Your Provider
Many second trimester symptoms are normal, but some need prompt attention. Contact My Obgyne if you experience:
- Vaginal bleeding, especially if it is more than light spotting
- Leaking fluid or a sudden gush of fluid
- Regular contractions or tightening that do not stop
- Severe headache, vision changes, or sudden swelling of the face or hands
- Fever, chills, or persistent vomiting that prevents you from keeping fluids down
- Burning with urination, blood in urine, or significant pelvic pain
- A noticeable decrease in fetal movement after you have been feeling consistent patterns
If you are unsure whether something is urgent, it is always better to call and get guidance.
Move Into the Second Half of Pregnancy With Confidence
The second trimester is a time of steady progress. You are completing important screenings, watching your baby grow, and building knowledge you will use as your due date approaches. If you are just entering this stage, reviewing what happened during the first trimester can help put your progress in perspective. And as you look ahead, learning about preparing for labor can help you feel ready for what comes next. Paying attention to your body and speaking up about any concerning symptoms or changes are two of the most important things you can do.
If you are in the second trimester and have questions about symptoms, fetal movement, screening, or upcoming visits, schedule a prenatal appointment with My Obgyne. Your care team is here to support you through every stage of pregnancy.
