Happy due date -- you made it! Since 40 weeks was the deadline you set for baby, you’ve probably already made sure the bassinet is made up, the car seat is installed and your hospital bag is by the door. In month nine, the average fetus is about 6.2 to 9.2 pounds and measures about 18.9 to 20.19 inches (wow!). But you really won't know exactly how big your baby is until his birth.

You still have a couple of weeks before you'll be considered "post-term." But to be sure your baby is still thriving, your practitioner will schedule you for testing to keep an eye on her if your pregnancy continues.

You may have a biophysical profile (BPP), which consists of an ultrasound to look at your baby's overall movements, breathing movements (movement of her chest muscles and diaphragm), and muscle tone (whether she opens and closes her hand or extends and then flexes her limbs), as well as the amount of amniotic fluid that surrounds her (important because it's a reflection of how well the placenta is supporting your baby).

Fetal heart rate monitoring (called a nonstress test or NST) will generally be done as well — by itself or as part of the BPP. Or, you may have what's known as a modified BPP, which consists of an NST and an ultrasound to assess the amount of amniotic fluid.

If the fetal testing isn't reassuring — the amniotic fluid level is too low, for example — you'll be induced. If there's a serious, urgent problem, you may have an immediate c-section.




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