The second trimester runs from week 13 to week 28 of pregnancy. Many women find this the most comfortable trimester, as early pregnancy symptoms like nausea often improve, energy levels increase, and the baby bump becomes visible. It is an exciting period of significant growth and development for your baby.
Baby Development
Weeks 13-16
- The baby is about 7-12 cm long
- Bones are hardening
- The baby starts to move (you may not feel it yet)
- Facial features develop further
- The baby can make facial expressions
- Reproductive organs become distinguishable
Weeks 17-20
- The baby is about 13-16 cm long
- You may begin to feel the first movements ("quickening") - often described as fluttering or bubbling (first-time mothers may not notice until 20-22 weeks)
- The baby develops a fine covering of hair (lanugo)
- A waxy coating (vernix caseosa) protects the skin
- The baby can hear sounds
Weeks 21-24
- The baby is about 27-30 cm long
- Lungs are developing but are not yet mature
- The baby has regular sleep and wake cycles
- The baby can respond to external sounds
- Fingerprints have formed
Weeks 25-28
- The baby is about 35-38 cm long and weighs approximately 1 kg
- Eyes can open and close
- The brain is developing rapidly
- The baby hiccups (you may feel rhythmic movements)
- If born at 24+ weeks, the baby may survive with intensive neonatal care, although outcomes improve with each additional week
Common Symptoms
Normal Symptoms
- Increased energy: Most women feel better than in the first trimester
- Growing belly: The uterus rises above the pelvis
- Skin changes: The "linea nigra" (dark line on the abdomen), darkening of nipples, possible "pregnancy glow"
- Back pain: As the belly grows and posture changes
- Braxton Hicks contractions: Mild, irregular "practice" contractions (should not be painful or regular)
- Increased appetite
- Nasal congestion: Hormonal changes cause swelling of nasal membranes
- Leg cramps: Especially at night
- Heartburn: As the growing uterus presses on the stomach
Skin Conditions
- Stretch marks: Appear on the abdomen, breasts, thighs. Using emollients may help with itching but cannot fully prevent stretch marks
- Melasma (pregnancy mask): Brown patches on the face due to hormonal changes and UV exposure. Use SPF 30+ sunscreen daily
Important Tests and Appointments
Anomaly Scan (18-22 Weeks)
The mid-pregnancy ultrasound checks:
- Baby's organs and structures (brain, heart, spine, kidneys, limbs)
- Placenta position
- Amniotic fluid levels
- Baby's growth
- Gender can often be determined if desired
Glucose Screening (24-28 Weeks)
- Oral glucose tolerance test (OGTT) for women at risk of gestational diabetes
- Routine screening in many UAE hospitals
Regular Antenatal Checks
- Blood pressure monitoring
- Urine testing (for protein and glucose)
- Fundal height measurement
- Baby's heartbeat check
- Discussion of symptoms and concerns
When to Call Your Doctor
Contact your healthcare provider immediately if you experience:
- Vaginal bleeding (any amount)
- Regular painful contractions before 37 weeks
- Sudden or severe swelling of the face, hands, or feet (could indicate pre-eclampsia)
- Severe headache that does not respond to paracetamol
- Visual disturbances (blurred vision, flashing lights)
- Reduced or absent fetal movements after you have started feeling regular movement
- Persistent abdominal pain
- Fluid leaking from the vagina (could indicate ruptured membranes)
- Pain or burning when urinating with fever
Healthy Habits
- Continue taking folic acid (if prescribed) and vitamin D supplements
- Eat a balanced diet with adequate calcium, iron, and protein
- Stay active (walking, swimming, prenatal yoga are excellent)
- Stay hydrated (especially important in the UAE heat)
- Get adequate sleep (sleeping on your side, particularly the left side, is recommended after 28 weeks)
- Attend all antenatal appointments
- Ask questions - no concern is too small
This article is for informational purposes only and does not replace professional medical advice. Always follow your obstetrician's guidance for your individual pregnancy.