First Trimester

6 Weeks, 1 Day

I wanted to share my sweet one’s development this week– it’s a big week for baby!

Look at that! From The Pregnancy Zone: 

Now that you have reached the 6th week of pregnancy, this is a very busy time for your developing embryo. The brain of your 6 week fetus develops into 3 different parts.

First is forebrain, which is for memory and reasoning, second is midbrain, which is for translating messages from brain to other organs and limbs, and the third is hindbrain, which is for regulating baby’s breathing and for muscle movements.

  • During 6 weeks pregnancy, your baby is of about 0.08 to 0.2 inches long and becomes thrice in its weight.
  • It’s measured from head to the buttocks and is known as the “crown-rump length”.
  • The physical features of your baby start to show this week and are wholly surrounded by the amniotic sac.
  • Your baby’s heart starts beating and it will be detected in the ultrasound scan. Heart beats about 100-140 beats per minute, about twice as much as an adult’s.
  • Digestive and respiratory systems also begin to develop.
  • Small buds that later become arms and legs also begin to appear this week.
  • The trunk and neck of your baby begin to develop.
  • Kidney and liver start to grow fast.
  • The blood starts to circulate.
  • The neural tube which connects the brain and with the spinal cords are now closed, and the cerebral development of the baby is in progress.
  • Placenta develops rapidly.
  • You will also be able to see dark spots which will later become its eyes and nostrils.
  • Also you will be able to see small holes in the head which later on become your baby’s ears.

When you are 6 weeks pregnant, 40 blocks of tissue will appear along the middle line of the embryo. They will form the conjunctive tissue, the ribs and the back muscles, and also the muscles from the baby’s sides.

Due to the development of first muscle tissues, the baby will make the first movements when you are in 6th week of pregnancy. These movements will be too small to be sensed by the mother but it is the start of baby’s “aware activity” inside the uterus.

I also found this great site at Similac including tips for Morning Sickness (which I love having while having a cold– I go from being starving to feeling sick, starving to feeling’s pretty charming)

I just had to duck in and share all the excitement– I am so glad my little one is growing so much this month, and I am focusing on positive energy and prayers as our sweet one grows!

It’s hard for me to chronicle exactly what is going on with me this week– I’ve had some off and on cramping, some constipation, and have been feeling crummy (but I am sick, after all). So I’ll touch base again later this week with a more solid update when I am feeling better!



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