20 Weeks Pregnant

By (embryologist) and (fertility counselor).
Last Update: 11/11/2014

This week you’ve reached half of your pregnancy, since it’s estimated that deliveries take place around the week 40. Although, every pregnancy and every woman are different. You will have put on 5 kilos and from now on you’ll gain half a kilo every week.

Provided below is an index with the 3 points we are going to expand on in this article.

Changes in the pregnant woman

The uterus has grown and it’s located where the navel is. It’s not uncommon that your heartbeats are higher since the heart has to pump more blood so that it reaches the foetus and the placenta. This causes deeper breaths, too.

The increase in weight and the blood flow make you feel your legs heavy, inducing the apparition of varicose veins. It’s advisable that you rest your legs regularly, apart from using loose comfortable clothes and proper shoes. If you want to wear high-heels, these must not be higher than 4 cm.

Another thing that must be taken into account is the quantity of iron you consume. Iron is of vital importance during pregnancy, since it plays a vital role in the oxygenation of blood. You should include in your diet food with high quantities of iron, such us red meat, legumes, fish, and spinach, and if the doctor recommends it, a multivitamin.

Fetal development

In the embryo the nipples will develop and if if it's a girl also the mammary glands.

During this week begins the formation of the vernix caseosa, which is an oily substance that begins to locate under the skin, being protected from the amniotic fluid. At the moment of birth the baby is covered in vernix.

At the end of this week the foetus is 25 cm long and weighs approximately 280 grams. From this moment on the baby is measured from head to toes. Before, as the baby’s legs weren’t developed enough and were really close to the body the measurement was done from the head to the notochord.

During this week the first ultrasonography in high definition can be performed. It’s a technique that offers an image with more sharpness than normal ultrasonography.

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 Neus Ferrando Gilabert
Neus Ferrando Gilabert
B.Sc., M.Sc.
Bachelor's Degree in Biology from the University of Valencia (UV). Postgraduate Course in Biotechnology of Human Assisted Reproduction from the Miguel Hernández University of Elche (UMH). Experience managing Embryology and Andrology Labs at Centro Médico Manzanera (Logroño, Spain). More information about Neus Ferrando Gilabert
Adapted into english by:
 Sandra Fernández
Sandra Fernández
B.A., M.A.
Fertility Counselor
Bachelor of Arts in Translation and Interpreting (English, Spanish, Catalan, German) from the University of Valencia (UV) and Heriot-Watt University, Riccarton Campus (Edinburgh, UK). Postgraduate Course in Legal Translation from the University of Valencia. Specialist in Medical Translation, with several years of experience in the field of Assisted Reproduction. More information about Sandra Fernández

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