Third Trimester
31 Weeks Pregnant
Your baby is the size of a Coconut 🥥
🥥
Medically reviewed by
MBBS, MD — Gynecologist & Obstetrician
Last reviewed:
Feb 2026
📏
Size
Coconut
📐
Length
41.1 cm cm
⚖️
Weight
NaN g
🗓️
Trimester
Third
⏱️
Week
31 of 40
🌱 Baby Development at Week 31
Baby is rapidly gaining weight — gaining about 0.5 lb per week. All five senses are functioning. Brain and nerves are directing bodily functions. Pupils react to light. Baby may respond to bright light shone on the belly.
All five senses functionalGaining 0.5 lb/weekPupils react to light
🤱 Common Symptoms
●Leaking colostrum from nipples possible
●Back pain
●Pelvic pressure
●Shortness of breath
●Frequent urination
🥗 Nutrition Tips
- Avoid gas-producing foods for comfort
- Calcium and Vitamin D for final bone hardening
- Stay hydrated — dehydration can trigger contractions
🏃♀️ Exercise Tips
- Walking is the best exercise in late pregnancy
- Pelvic tilts and gentle cat-cow stretches
- Practice relaxation and breathing techniques
🏥 Medical Tests & Appointments
Routine visitDiscuss birth plan with provider
🔬 Hormone Changes
Prolactin steadily rises preparing breasts for milk production. Oxytocin receptors in uterus increase.
Frequently Asked Questions
Common questions answered by our medical team