3D video baby update: Week 40

Reviewed by: HiMommy Expert Board
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5 min read
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Jun 23, 2025
Mom, I'm like a large watermelon (51.2cm, 3462 grams)
I've reached full term! I'm ready for our first meeting with you and the outside world. Respiratory, circulatory, and digestive systems are fully prepared for independent functioning. My lungs will fill with air on the first breath, and the oval opening in the heart will close, redirecting blood to the lungs. The circulatory system will undergo dramatic change from fetal to newborn circulation. My brain is ready for first sensory stimuli - light, sounds, touch, taste, and smell. Time for the first cry, first breath, and first look into your eyes, mom. All months of development have led to this magical moment of our meeting!
Remember mom, every child develops at their own pace and has their unique timeline. If you have any doubts about my development in your belly, consult with a doctor.