Baby development

The development of the baby at 12 weeks, corresponds to the 3rd month of pregnancy. The baby is now about the size of a lemon and its essential development is complete and he is already able to open his mouth and yawn, have hiccups and swallow, which stimulates the development of internal organs.

Although the placenta is still small, it is already formed and the umbilical cord begins to grow day by day, becoming thinner and longer.

Development of the fetus at 12 weeks

At 12 weeks of gestation, the baby's heart is already working, the external structures of the ear begin to move from the neck to the sides of the head, and the middle and inner ears are already formed.

The ovaries or testicles develop inside the body, but the sex of the baby is not yet visible from the outside, because the genitals are not yet formed.

The baby spends most of the time in a fetal position, but is already very active and although the mother does not yet realize it, he is already beginning to move, as well as opening and closing his mouth and swallowing amniotic fluid. Although the members are still very short, these first movements stimulate their growth and strengthening.

Fetus and ultrasound photos

The first ultrasound should be performed in the first trimester of pregnancy, between 11 and 14 weeks. See how ultrasound is done and what diseases can be detected.

Fetus size

The size of the fetus at 12 weeks of gestation is about 6.5 cm long, from the head to the buttocks, which is the approximate size of a lemon and weighs approximately 14 g.

Changes in women at 12 weeks pregnant

Changes in the woman's body at 12 weeks of pregnancy are becoming more evident. The breasts increase in size and the superficial veins become more prominent and the abdomen begins to grow. At this stage it is expected that the woman will have less sleep and the nausea tends to decrease and she may experience headache and dizziness.

Although the recommendations for weight gain during pregnancy are dependent on the weight the woman had before becoming pregnant, it is natural that in the first trimester there is an increase of approximately 2 kg and in the second and third trimesters there is an increase of approximately 500 g per week.

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Your pregnancy by trimester

To make your life easier and you don't waste time looking, we have separated all the information you need for each trimester of pregnancy. What quarter are you in?