The size of your children from head to heel is about 26 cm. During this week, the hair on their head starts to grow. And the senses of hearing, smell, taste, sight and touch are perfected and find their own place in the brain. When twins are born, their sense of smell is stronger than other senses, and that's why they are able to recognize you immediately. Most mothers feel the movements of twins between 18 and 22 weeks. And if they have already been pregnant, they may recognize it earlier. The movements of the twins may sometimes be enough to wake up the mother during the night. A white, sticky and greasy substance called vernix covers their skin, which both protects their skin and prevents infection after birth. Your babies will swallow the amniotic fluid in the sac, which is good exercise for their digestive system. Their eyebrows and eyelids are complete and the nails cover the ends of the fingers. Make sure you are getting enough iron, as mothers with twin pregnancies need more iron. Iron in foods such as red meat, fish, chicken, lentils and spinach and …………. Yes, but you also need to take iron supplements. Uterus: The apex of the uterus is now 5 cm above your navel. Intestines: A dark green (close to black) and sticky substance called meconium collects in their intestines, which will be excreted as the first stool after Iman. Skin: Your children's skin is covered with a white, greasy and slippery substance called vernix, which protects your baby's skin inside the amniotic fluid.