At 17 weeks gestation, the fetus is about 16cm in length, 12cm in parietal length, and weighs about 110g. If it is too big or too small, it will need to be adjusted as prescribed by your doctor. At 17 weeks gestation, the fetus is usually about 16cm long, while the top hip is about 12cm long and the weight is usually about 110g. At this time, the fetus has already developed hair, and the fetus has already shown respiratory movements. In addition, the skin of the fetus in the 17th week of pregnancy is generally thin and dark red, and there is no subcutaneous fat for the time being, and some pregnant women have already experienced fetal movement in the 17th week of pregnancy. If the fetus is too big or too small at 17 weeks of pregnancy after imaging, it is necessary to check the cause of the disease and take regular measures to adjust under the guidance of the doctor. The size of the fetus at 17 weeks of pregnancy can be clearly seen through imaging tests, and any abnormalities should be promptly consulted.