Pregnancy Week 23: Symptoms, Baby Size & What to Expect

Your Baby at Week 23

Your baby measures roughly the size of a grapefruit (11.4 in) and weighs about ~500g. The major developments this week: Lungs producing surfactant, skin becoming less translucent, rapid weight gain beginning, hearing sharp enough to respond to loud sounds.

Your baby's lungs are producing surfactant for the first time — this substance will allow the air sacs to inflate properly at birth.

Symptoms at Week 23

Common symptoms during week 23 of pregnancy include: Feeling heavy, swollen feet and ankles, Braxton Hicks more frequent, difficulty sleeping, back pain intensifying.

Remember that every pregnancy is unique — you may experience all, some, or none of these symptoms. If anything feels unusual or concerning, don't hesitate to contact your healthcare provider.

📖 Also read: Preeclampsia Signs Prevention | Pregnancy Week 13 Guide

What to Do This Week

This is the week of viability — if born now, your baby would have a chance of survival with intensive NICU care (~20-35% survival rate). Each additional week dramatically improves outcomes.

Nutrition & Wellness

Staying well-nourished is crucial at every stage of pregnancy. Focus on folate-rich foods (leafy greens, lentils, fortified cereals), iron (lean meats, beans, spinach), calcium (dairy, fortified plant milks), and omega-3 fatty acids (salmon, walnuts, flaxseed). Stay hydrated with at least 8-10 glasses of water daily.

Frequently Asked Questions

Is it normal to feel [symptom] at week 23?

Yes, most symptoms at week 23 are completely normal. Common experiences include Feeling heavy and swollen feet and ankles. However, contact your doctor if you experience severe pain, heavy bleeding, or persistent vomiting that prevents you from keeping fluids down.

How big is my baby at 23 weeks?

At week 23, your baby is approximately the size of a grapefruit, weighing about ~500g. Lungs producing surfactant.

What should I avoid at week 23 of pregnancy?

Continue avoiding alcohol, raw/undercooked meats and fish, unpasteurized dairy, high-mercury fish (shark, swordfish, king mackerel), deli meats unless heated until steaming, and limit caffeine to under 200mg per day.