Second Trimester
18 Weeks Pregnant
Your baby is the size of a Mango 🥭
🥭
Medically reviewed by
MBBS, MD — Gynecologist & Obstetrician
Last reviewed:
Feb 2026
📏
Size
Mango
📐
Length
14.2 cm cm
⚖️
Weight
NaN g
🗓️
Trimester
Second
⏱️
Week
18 of 40
🌱 Baby Development at Week 18
Baby can hear sounds from outside the womb! Talking, singing, and music all reach baby now. The nervous system is rapidly developing. Baby practices yawning, hiccupping, and swallowing. Vernix (protective coating) is forming on skin.
Baby can hear!Anatomy scan weekGender detection possible
🤱 Common Symptoms
●Strong kicks and flutters felt
●Growing belly
●Backache
●Leg cramps
●Braxton Hicks contractions may start
🥗 Nutrition Tips
- Potassium (bananas, sweet potatoes) for leg cramps
- Calcium-rich foods for bone development
- Continue iron supplementation
🏃♀️ Exercise Tips
- Talking or singing to baby during walks
- Prenatal yoga for relaxation
- Avoid high-altitude exercise
🏥 Medical Tests & Appointments
Anatomy scan (18-20 weeks) — detailed fetal surveyGender can usually be determined
🔬 Hormone Changes
Cortisol rises, helping lung development. Thyroid hormones increase metabolism.
Frequently Asked Questions
Common questions answered by our medical team