The most prominent growth shown by your baby is the hardening of ear bones which means that your baby will soon start hearing the noises. Your baby will start hearing sounds by the end of seventh month. Lungs are still developing, though your baby starts practicing breathing with amniotic fluid.
Face of your baby will now begin to properly shape. An ultrasound scan will suggest that your baby may frown, squint and grimace. Although, the eyes of your baby are closed, eyebrows begin to appear and also some scalp hair begins to develop.
By the end of the fourth month, your baby will have the length of about 5.5 inches with a weight of about 6 ounces. You can now even detect her heartbeat with the help of stethoscope.
Where your baby is developing at a fast pace, you will also experience some changes in your body as well. The areola becomes darker, your veins become much more prominent and you may experience blotchy skin on your face. This is often regarded as normal practice during pregnancy while some practitioners suggest that this is caused because of unhealthy diet.
As your baby is growing in your uterus, the demand of blood is increased by different organs such as your uterus and skin require twice as much blood than usual and kidneys require 25% more blood. The heart is now working hard to meet the blood requirement of your body. Your uterus will begin to grow in size as result pushing the internal organs as well. Women feel out of breath more during pregnancy because of this very fact as uterus pushed against the lungs with the growing size and leaves less space for the lungs. It is advised to have enough breaks between your working activities to keep your breath normal.
Although, your baby start moving in the uterus by this time but it happens very rarely that the mother feels those movement at this stage. However, she will start feeling those movements in a couple of week time.