Week 23 of Pregnancy
Lung capillaries develop and hearing is acute.
Fetal size
Large mango
- Length
- 28.9 cm
- Crown-to-heel
- Weight
- 500 g
Fetal development
- Lung blood vessels develop, preparing for first breaths.
- Hearing is sensitive enough to be startled by loud noises.
- Skin is still translucent but thickening.
Maternal changes
- Mild swelling in feet and ankles is normal.
- Weight gain accelerates.
Recommended checkups
- A sudden rise in blood pressure warrants screening for preeclampsia.
Jump to week
Textbook averages. Individual variation is wide and this is not medical advice — confirm with your OB.