By Neus Ferrando Gilabert BSc, MSc (embryologist).
Last Update: 11/07/2014

During this week you’ll feel better and the nausea will have decreased, so make the most of this moment, since you won’t be so tired and sleepy, and take up doing some light exercise, such as yoga, pilates, walking, swimming, belly dance… It’s your choice!

Your mood will be good, although you may still feel some annoyance, such as a stuffy nose. This is due to the fact that the nasal mucosae depend on the hormones, and when the estrogenic hormone levels increase this mucosa becomes inflamed and you secrete more mucus. It’s called pregnancy rhinitis, is very common and the steam baths can help you breather better.

You’ll notice the skin is more sensitive, and some dark spots or darker areas may appear. At the belly, a dark line, which receives the name of linea alba, may appear going from the navel until the pubic area. This line is produced by an increase in the melanin production (skin pigment). The high hormonal levels activate the melanin production even though there’s no exposition to the sun. You must be cautious and increase the sun protection, because a pregnant woman is especially sensitive to sun exposition. After delivery, this situation returns to normality.

Some varicouse veins may have appeared, due to the blood flow and increase in body weight that your legs have to stand. A piece of advice: it may be good to change your position, walk every day and drink a lot of water to improve blood flow.

15 weeks pregnant

As for the baby, the hair on head and eyebrows increases its thickness. If the baby has the dark hair gene, the pigmentary cells located in the hair follicles will start producing the dark pigment.

The muscles of the face are able to carry out the movement of suckling, so he may start suckling his thumb. He’s preparing his muscles for when he will have to suckle breast milk.

His skin is semitranslucent and very thin, which means that you will be able to see his veins and arteries.

The vocal cords are formed, even though the child won’t use them until he’s born. At the end of this week he is 12 cm long and weights 50 grams.

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Authors and contributors

 Neus Ferrando Gilabert
BSc, MSc
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
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