Exposure to light in the womb is essential for unborn babies to develop healthy eyes, according to new research.Eyes depend on light to see, and a new study on mice found that the eyes also need light for healthy development during pregnancy. When the fetus is growing inside the uterus, the visual system begins to form as early as week 4 of pregnancy.
This is the 18th week. You may be feeling a lot hungry this week. This happens because the baby is being supported by the mother. You have to take care of what you eat as the baby is getting all its nutrition from you. You may also begin to gain weight. You should remember to stay active and do some mild exercises like walking and yoga and also avoid fatty foods.