At 8-12 weeks of gestation, the fetus is approximately 1.6 to 2.4 inches (4 to 6 cm) long and weighs around 0.5 to 0.7 ounces (14 to 20 grams). The fetus has distinct human characteristics, including facial features such as a small nose, ears, and lips, and fingers and toes that are fully formed. The vital organs, such as the heart, liver, kidneys, and lungs, are also developing rapidly during this stage.
At this point in development, the fetus is starting to move around and can make small movements, but these are usually too slight to be felt by the mother. The nervous system is developing, and the fetus will begin to respond to stimuli such as touch and sound.
The sex of the fetus can usually be determined through an ultrasound at this stage, although the accuracy of the prediction can vary depending on the position of the fetus and the expertise of the person performing the ultrasound.
It is important for the mother to continue receiving prenatal care during this time to ensure the healthy development of the fetus and to monitor for any potential complications.