23 Weeks Pregnant: What to Expect, Baby Development & Growing Bump
23 weeks pregnant: what to know right now
Baby: Size of a grapefruit (~11.4 inches, ~1.1 lbs) · Face fully formed, fat deposits building, can hear your voice · Body: Visible bump, back pain, Braxton Hicks possible, gestational weight gain accelerating · Key milestone: Baby's face is formed and recognizable on ultrasound · Coming up: Glucose tolerance test (weeks 24–28)
Here's everything happening with your baby and your body this week.
Sleep on your side with a pregnancy pillow between your knees — it takes pressure off the vena cava and reduces back pain.
🌱 Baby's development this week
- Viability milestone — lung development accelerating
- Skin less translucent as fat deposits grow
- Baby responds to loud sounds with a jump
- Pancreas developing steadily
The viability threshold — when a baby can survive outside the womb — has shifted from 28 weeks (1960s) to 22–23 weeks today, thanks to NICU advances. Survival rates at 23 weeks are now 30–50%.
🤰 Your symptoms this week
💛 Changes in your body
- Uterus now 1.5 inches above belly button
- Swelling in feet and ankles is common and normal
- Glucose screening (GD test) coming up at 24–28 weeks
- Sleep may be difficult with bump and kicks
The viability milestone can paradoxically increase anxiety for some women. If intrusive thoughts about baby
Gestational Weight Gain at 23 Weeks: What's Normal
By 23 weeks, weight gain is accelerating alongside the baby's growth. Understanding what's normal reduces anxiety and helps you make sense of what you're experiencing.
Recommended total pregnancy weight gain (from ACOG guidelines):
- Underweight (BMI under 18.5): 28–40 lbs total
- Normal weight (BMI 18.5–24.9): 25–35 lbs total
- Overweight (BMI 25–29.9): 15–25 lbs total
- Obese (BMI 30+): 11–20 lbs total
At 23 weeks, most women with a normal pre-pregnancy BMI will have gained approximately 13–16 lbs. This weight is distributed: baby (~1 lb), placenta (~1 lb), amniotic fluid (~2 lbs), increased blood volume (~3 lbs), breast tissue (~2 lbs), uterine growth (~2 lbs), and fat stores (~3–4 lbs).
Where weight gain matters more than the number: Rapid sudden weight gain (more than 5 lbs in a week) can indicate fluid retention and possible preeclampsia — contact your provider. The rate matters more than the total at this stage.
Also note: the anatomy scan (18–22 weeks) should be complete by now. If you haven't had it, contact your provider — it can still be performed with adequate accuracy at 23–24 weeks.
🥗 Nutrition focus
- Protein intake critical as baby gains 100g/week from here — aim for 80–100g/day
- Zinc supports fetal immune development — beef, chickpeas, pumpkin seeds
- Avoid eating a large meal within 2 hours of bedtime — reduces heartburn and improves sleep quality
Glucose tolerance test (gestational diabetes screening) is coming at 24–28 weeks — prepare by eating normally beforehand.
✅ This week's checklist
Frequently Asked Questions: 23 Weeks Pregnant
How big is baby at 23 weeks?+
At 23 weeks, your baby is approximately 11.4 inches (28.9 cm) long and weighs about 1.1 lbs (501 g) — roughly the size of a large grapefruit. The face is now fully formed with distinct features visible on ultrasound.
What are common symptoms at 23 weeks pregnant?+
Common symptoms at 23 weeks: visible and growing bump, back pain (as the center of gravity shifts forward), round ligament pain, Braxton Hicks contractions, leg cramps, increased vaginal discharge, and gestational weight gain accelerating.
What trimester is 23 weeks?+
23 weeks is in the second trimester (weeks 14–27). You have approximately 17 weeks until your due date. Week 28 begins the third trimester.
Is it normal to feel pressure in the pelvis at 23 weeks?+
Pelvic pressure at 23 weeks can be normal as the uterus expands and ligaments stretch. Symphysis pubis dysfunction (SPD) is common from the second trimester. However, consistent pressure combined with rhythmic cramping, lower back pain, or vaginal discharge before 37 weeks should be assessed promptly — these can be signs of preterm labor.
What is normal fetal movement at 23 weeks?+
At 23 weeks, you should feel your baby moving regularly — kicks, rolls, and jabs. There's no required number of movements per day at this stage. If you notice a day significantly quieter than usual, drink something cold and sweet, lie on your left side for an hour, and contact your provider if movement doesn't resume.
Track your pregnancy week by week
Interactive guide · 40 weeks · Fruit size visualizations · Personalized tips
Explore Week 23 in the Interactive Guide →