The second trimester — weeks 14 to 27 — is often described as the most comfortable stretch of pregnancy. For many parents, the worst of first trimester nausea has passed, the bump begins to show, and there is a growing sense of reality to the pregnancy that earlier weeks may not have brought. But the second trimester is also a time of genuine wonder: this is usually when you feel your baby move for the first time, when the anatomy scan offers a detailed look at how your baby is developing, and when the physical changes to your body become more noticeable to others. This guide walks through what to expect — not with a checklist mentality, but with the kind of honest, practical perspective that actually helps.

Why the Second Trimester Feels Different

The hormonal surge that drives first trimester symptoms begins to level off around weeks 12–14. For many parents, this brings a return of energy, an improvement in nausea, and a renewed capacity to eat and engage with daily life. The pregnancy feels less abstract — you may start to show, and the first flutters of movement are approaching.

That said, this is not a universal experience. Some parents continue to feel nauseous well into the second trimester. Others find new discomforts emerging as the bump grows — round ligament pain, back ache, heartburn. The second trimester is not without its challenges, but they tend to be more manageable than the fatigue and sickness of the first.

Baby Development: Weeks 14–27

The second trimester is a period of rapid and fascinating development for your baby. Here is what is happening beneath the surface:

Weeks 14–18: Building the Details

• Facial features become increasingly defined — eyebrows, eyelashes, and unique fingerprints form.
• The baby begins to make sucking and swallowing movements.
• Fine hair called lanugo covers the body, helping regulate temperature.
• The skeleton is hardening from cartilage to bone.

Weeks 18–22: The Anatomy Scan Window

Around weeks 18–21, most parents are offered a detailed anatomy scan — sometimes called the mid-pregnancy or anomaly scan. This is a thorough ultrasound that checks the baby’s major organs, limbs, and growth. It is also the appointment where, if you choose to know, the baby’s sex is often visible. The anatomy scan is one of the most anticipated appointments of the entire pregnancy, and it is completely normal to feel a mixture of excitement and quiet anxiety before it.

• The baby can now hear sounds from outside the womb — your voice, music, familiar sounds in your environment.
• First movements, known as quickening, are typically felt between weeks 16 and 24 — earlier for those who have been pregnant before.

Weeks 23–27: Growing Stronger

• The baby’s lungs are developing, though not yet ready for independent breathing.
• Eyes, which were previously fused shut, begin to open.
• Regular and recognisable movement patterns often become established.
• By week 24, the baby reaches the threshold of viability — the point at which, with specialist medical support, survival outside the womb becomes possible.

Body Changes Parents Often Notice

Your body is changing significantly during these weeks, and not all of it is visible to others yet. Here is what many parents report:

• A visible bump: Most parents start showing noticeably in the second trimester, though the timing varies widely depending on body type and whether it is a first or subsequent pregnancy.
• Round ligament pain: Sharp, brief pains on one or both sides of the lower abdomen as the ligaments supporting the uterus stretch. Usually harmless, but mention it to your midwife if it is persistent or severe.
• Heartburn and indigestion: As the uterus grows, it can press on the stomach. Eating smaller meals and staying upright after eating can help.
• Skin changes: The linea nigra (a dark vertical line on the abdomen), skin darkening around the nipples, and sometimes a pregnancy glow are all common. So is itching as skin stretches — keep skin moisturised.
• Swollen gums: Pregnancy hormones can make gums more sensitive and prone to bleeding. Keep up with dental hygiene and mention any significant changes to your dentist.

“”Feeling your baby move for the first time changes something fundamental in how the pregnancy becomes real to you. It is worth being patient for.””

— Ina May Gaskin, midwife and author of Ina May’s Guide to Childbirth. Gaskin is one of the most widely respected voices in midwifery, and her focus on the embodied, felt experience of pregnancy offers a valuable counterbalance to the anxiety-driven way pregnancy is sometimes discussed.

For a complete overview of your pregnancy journey from week one to birth, visit our Pregnancy Week by Week guide in the Pregnancy section.

Frequently Asked Questions

When will I start to feel the baby move?

Most parents feel first movements — described as flutters, bubbles, or light taps — between weeks 16 and 24. If you are not feeling anything by week 24, mention it at your next appointment. Do not compare timing with other parents; there is significant variation in when movements are first noticed.

What does the anatomy scan check for?

The anatomy scan looks at the baby’s brain, heart, spine, kidneys, limbs, and face, and checks that growth is on track. It does not screen for every possible condition, and an unremarkable scan is reassuring but not a guarantee of a completely problem-free pregnancy. Your sonographer or midwife will explain any findings.

Is it normal to have more energy in the second trimester?

For many parents, yes — energy often returns as first trimester hormonal surges settle. However, it is not universal. If you are still exhausted in the second trimester, that is also within the range of normal pregnancy experience.

Can I sleep on my back in the second trimester?

After around 28 weeks, sleeping on your back is generally advised against as the weight of the uterus can compress major blood vessels. In the second trimester, occasional back-sleeping is unlikely to cause harm, but getting into the habit of sleeping on your side — particularly your left side — is a good idea to establish early.

What is the glucose screening test and when does it happen?

In many countries, a glucose screening test for gestational diabetes is offered between weeks 24 and 28. It involves a blood test after drinking a glucose solution. Your care team will advise on whether and when this applies to you based on your risk factors.

Key Takeaways

• The second trimester (weeks 14–27) often brings relief from first trimester symptoms and a return of energy.
• Baby development milestones include fingerprints forming, the ability to hear, and eyes beginning to open.
• The anatomy scan (weeks 18–21) is a key appointment that checks major developmental markers.
• Feeling baby move for the first time — usually between weeks 16 and 24 — is one of the most memorable moments of pregnancy.
• Common physical changes include round ligament pain, heartburn, and skin changes — all typically manageable.

The second trimester is where many parents find their footing in pregnancy. The uncertainty of the early weeks begins to ease, the baby becomes more real, and the experience starts to belong to you in a way it did not before. Lean into it — the kicks and scans and new sensations are yours to notice and savour.