Feeling energetic and excited about the forthcoming birth? If you find yourself dancing around the house with joy, your baby will hear the music and feel you sway, since his hearing and sense of movement are well developed now. He's also started blinking his eyelids. At the end of this week, your baby becomes "viable". This means that he has a chance of survival if he makes an early arrival. However, with each week that passes, he becomes more and more mature, and better able to cope with the outside world.