Your fetus is now starting to look more like a baby as the embryonic tail is no longer there. It is also the week when the little one will start gaining weight faster. The brain sends messages to muscles, which are growing, telling them to grow, which in turn helps in the growth of the baby.
At this stage, arm and leg development take place. All joints including the knee, shoulder, elbow, ankle and wrist joints, are working and helping to move freely and vigorously inside the amniotic sac. Amniotic fluid will act as a cushion, protecting your baby from any bumps and pressure. This protection will help to keep moving without any fear of getting hurt. Your baby will also respond to outside stimuli like light and sound too. Your doctor will do an ultrasound and brief you about your baby’s mobility. Stretching and yawning by your baby are also seen.
For you to feel baby’s first movements, called “quickening” it will take a few more weeks. It's between weeks 16 and 25 of your pregnancy. As the pregnancy progresses with the baby’s growth, the movements get stronger and towards the end of pregnancy, the movements are less as the baby has now become big and there is not enough space to move around in the amniotic sac.
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