Week 18 of Pregnancy - FamilyEducation

Second Trimester

Your 18th Week

You'll find you're gaining weight week by week, which is perfectly normal.
Not all the weight you're gaining is your baby. In fact, most of the increase is because parts of your body, such as your breasts, are getting bigger and your blood volume is increasing. You might want to think about signing up for prenatal classes now because they fill up quickly. They are a great source of information, as well as a good way to make friends and compare notes with other pregnant women.
1. Your uterus is likely to be large enough to give you a noticeably rounded belly.
2. The sex organs are developing well, both externally and internally. In baby girls, follicles containing immature eggs are already forming in the ovaries.
3. Your baby is now bigger than the placenta for the first time, and will continue to outgrow it.
4. At 18 weeks the average crown to rump length is 4.6 in (11.6 cm) and the average weight is 3.5 oz (100 g).
5. The placenta is still growing, although not as fast as in earlier weeks. It continues to be a vital supply line for the baby.
6. The baby's movements are getting more vigorous and you may now be able to feel them.
Your uterus is likely to be large enough to give you a noticeably rounded belly.The sex oragans are developing well, both externally and internally.Your baby is now bigger than the placenta for the first timeAt 18 weeks the average crown to rump length is 4.6 inThe placenta is still growingThe baby's movements are getting more vigorous

Pregnancy Day by Day

By Consultant Editor, Paula Amato, MD

Excerpted from Pregnancy Day by Day.
Copyright © 2008 Dorling Kindersley Limited.
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