At 17 weeks of pregnancy, the fetus is about 16 cm in length, 12.8 cm in top-rump length, and weighs about 110 g. There are some individual differences in each fetus. At this time, the fetus starts to show respiratory movements, and the sex of the fetus can be identified from the external genitalia. The skin is thin and dark red, with no subcutaneous fat, and the scalp has grown hair and body hair appears. Some pregnant women are conscious of fetal movement, but some of them may not feel it yet because it is relatively small, weak and not very obvious at this time, and if you don’t observe it carefully, you may not be able to see it yet. Later on, as the pregnancy week increases, the fetal movement will become more and more obvious. At this stage, the baby’s movement increases significantly, and the pregnant woman should supplement nutrition comprehensively in order for the baby to develop healthily.