He can hardly have been burning the candle at both ends -- but perhaps hes tired out from all that growing. This remarkable picture shows a baby yawning in .<br>My 20 week old son within his mothers womb yawning. Really amazing to see and experience.<br>30 weeks baby boy keep yawning..3D Ultrasound at 30 weeks 3d 4d ultrasound, 3D. 30 Weeks ultrasound.amazing 3d 4d ultrasound session done at A New .<br>Baby, yawning, covers mouth, ultrasound,<br>How cool is this!