Every 4th week includes a picture of what baby looks like

Pregnancy week 17

Baby is about 5 inches long and weighs 6 ounzes. Its about the size of an orange. Some of her more advanced body systems are working now too, including the circulatory system and urinary tract. She's even begun inhaling and exhaling amniotic fluid so her lungs will be strong enough at birth to breathe. You've probably gained at least 5 pounds by now, maybe as many as 10. Your uterus is growing and you might feel pangs of pain caused by the ligaments stretching in your abdomen

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