Second trimester
Week 23 of Pregnancy
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About the size of a grapefruit
11.4 in · 28.9 cm · 1.10 lb · 0.50 kg (head to heel)
Your baby this week
- Skin is still translucent but starting to fill out as fat forms beneath it.
- Loud sounds from outside may trigger movement.
- The lungs begin producing surfactant, the substance that lets air sacs inflate.
What you may be feeling
- Possible painless Braxton Hicks tightenings
- Swelling
- Linea nigra darkening
Gentle tips for this week
- Stay well hydrated — it helps with Braxton Hicks, swelling and fatigue all at once.
- Kick counting typically starts around 28 weeks if your provider recommends it.
Common question for week 23
What are Braxton Hicks contractions?
Irregular, usually painless tightenings of the uterus that begin mid-pregnancy. They are practice for labor and typically ease with rest, water and a change of position. Call your provider if they become painful or regular.
Every pregnancy is different. Sizes are averages, symptoms vary widely, and none of this replaces the guidance of your own provider.