At 31 weeks your baby is approximately 16 inches from head to toe, and weighs almost 3.3 pounds(about the size of a coconut).
After weeks of rapid growth and plentiful activity, your baby might seem calmer this week. That's not unusual. There's less room in the womb. Your baby's organs are continuing to mature and she is passing water from her bladder: good practice for the urinating it'll do after it's born.
Note: Every baby develops a little differently — even in the womb. This information is to give you a general idea of your baby's size.
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