Pregnancy calendar - Week 13

How big?

Length± 7.5 cm
Weight± 30 grams
Information about the photo
Suction muscles in the mouth make the cheeks more rounded, tooth buds continue to develop and salivary glands start functioning.


Your baby is completely finished but still far from being viable. It will take the next time to grow and the organs must mature further. Your baby's neck has been developed and he can move his head freely. Your baby can be very busy, but unfortunately you probably still can not feel it. He can also get the hiccups by drinking the amniotic fluid. He now gets nest hairs all over his body.


A milestone in pregnancy. The majority of the risky period is over. Most pregnancy ailments will also decrease now.
You can now carry out a double test. This test serves for the detection of chromosomal abnormality (Down syndrome). The test is done through a blood test. Herein the content of PAPP-A and hCG is examined. The test offers no diagnosis, but only a probability calculation. The result is known within a week. (preferred test: week 10 or 11)
From week eleven to the fourteenth week it is possible to detect a chromosomal abnormality (Down syndrome) via a neck fold measurement. With an ultrasound, the thickness of the fetal fold of the fetus is measured. The result of the test is based on probability. In 3% of cases with a normal fold of the neck, the baby appears to have a chromosome or congenital defect. The result is immediately known.
In the same period (week 11 to week 14) a combination test is also possible. This test also examines the chromosomal abnormality (Down syndrome) but does this in combination with a neck fold measurement and a double test. The age of the mother is taken into account. The result of this test is also based on probability calculation. The result is known within a week.


Call your (health insurance) insurance company on time. At most companies you will receive a maternity package in a few weeks. In any case, please inquire about it.
Turn the overview off, 'When do you arrange what?'
A pregnancy diary is fun for now and for later!
What's in a maternity package?
First visit to the midwife!

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Video: Pregnancy Health Information : What Is a Pregnancy Calendar?

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