You. Your Pregnancy. Your Baby.

Pregnancy Calendar: Week Eighteen

Do you feel any kicks yet? Your baby may start kicking this week, yet another sign of it's developing personality.

With fully developed ears your baby can hear all of the noises that are present in the womb; blood rushing through the umbilical cordA flexible structure that connects the fetus to the placenta during pregnancy. It carries blood, oxygen, nourishment and waste to the placenta. It is first formed during the fifth week of pregnancy and contains the yolk sac and body stalk.
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, your heartbeat and lungs and of course your voice, which is pitched to cut through the background noise. Go ahead and sing to your baby. Although watch out: it may kick you in response!

External details

Over the last few weeks your baby has been developing bone tissue. Among the first of the bones to ossifyA term used to describe the development and hardening of bone. There are two processes: intramembranous ossification and intracartilaginous ossification.
Intramembranous ossification takes place in the formation and development of the skull and involves initially creating membrane which subsequently harden to become bone.
Intracartilaginous ossification is the formation of rods of cartilage, which subsequently harden to form the bones of limbs.
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are the ossiclesA collective term used to describe some of the small bones that make up the inner ear.
Visit our comprehensive glossary for more pregnancy terms and definitions.
, the bones that transmit sound to the inner ear.

Internal details

Your baby's retinasA membrane of the eye consisting of nervous tissue and comprising ten layers. It is contiguous with the optic nerve sending visual impulses to the brain.
The retina is soft and contains rhodopsin which gives it its purple tint. If exposed to direct sunlight it will become clouded.
Visit our comprehensive glossary for more pregnancy terms and definitions.
are also developing and are now light sensitive. Your baby is now aware of sound and light and is now coming to terms with the noisy environment in which it lives.

Your changing body

Pregnancy Tip!
  • Your baby can now hear sounds. So start talking or singing to your baby so that it will be reassured and recognize your voice after birth.

Your baby is now large enough and moving sufficiently vigorously for you to be able to feel its first kicks and prods.

You can feel your baby inside you, but you still have time before your baby fills out the uterus. Right now it is kicking, bouncing and spinning inside you.

You probably will find that your baby gets especially energetic in the evenings. If you have trouble sleeping at night, try supporting yourself with more pillows. At this stage some babies will stick their thumbs in their mouths although they cannot yet suck on them.


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