Detailed explanation of fetal position pictures at 8 months of pregnancy 1. Fetal position At 8 months of pregnancy, the fetus may be in a head-down position, which is the most ideal birth position. At this time, the fetus\’s head has entered the pelvic cavity and is ready for the birth process. However, sometimes the fetus can be in a sitting or transverse position, which increases the risk of dystocia and requires attention. 2. Fetal length and weight: At 8 months of pregnancy, the fetus is about 45-46 cm in length and weighs about 2.3-2.5 kg. At this time, the fetal body