First Trimester of Pregnancy – Conception To 12 Weeks

The growth of your little one in your womb is a continuous process that will often leave you in a sense of awe. Amidst the other trimesters, a lot will happen during the first trimester of your pregnancy, even before you are aware that you are pregnant. However, when it's happening on such a small scale, it is quite hard to comprehend how actually your little one is growing.

Let us take a sneak peek inside the first 12 weeks of pregnancy in brief!

Fetal Development Pregnancy’s First Trimester

The first trimester is an emotional and physical rollercoaster for every soon-to-be-mother, filled with dramatic body changes, excitement, and anxiety. Your body will be working overtime to support the growth of a new life. Here’s an overview of the pregnancy week calculator on how your little one takes on a milestone in the first trimester.

1. First Month (Conception to Four Weeks)

The first month in your pregnancy calculator is known for the fertilization of eggs. Once the sperm has fertilized the egg, it will start to divide into more cells. It will happen at the time it is carried along the fallopian tube of the uterus. When it reaches the uterus, the fertilized egg becomes a cluster of cells that float in the uterine cavity and then will be embedded in the wall of the uterus.

The implantation in the wall of the uterus will complete the process of conception. These processes will take roughly four weeks after day one of your last menstrual cycle.

2. Second Month

The second month marks the beginning of the growth of the embryo. Here's how it progresses:

• 5th Week - The embryo will be the size of a gain and will be visible to the naked eye. It will begin to grow the brain with 2 lobes and has the formation of a spinal cord.

• 6th Week - The embryo will now have a head and partially formed ears and eyes. It will have 2 chambers, the heart and its beating. Small buds are present, which will form arms and legs. The beginning of the spine can be seen and the lower part of the body appears like a tail.

• 7the Week - The fetal development will reach around 2 cm long with the growth of eyes and ears. The brain and the blood vessels in the head can be seen. The bones in the arms and legs begin to harden, and elbows and knees become apparent.

• 8th Week - This is known as the embryonic period, where you can see the fastest growth of your fetus, which includes the further development of the organs and tissues.

3. Third Month

Here's what happens in the third month, which completes the first trimester:

• 9th Week - The head of the fetus will be almost half of the crown and begin to take on a human shape.

• 10th Week - The external genital organs will begin to develop with the apparent appearance of fingernails and toenails.

• 11th Week - The fetus’s eyelids are formed, with fully formed arms and legs. The larynx will also begin to form in the trachea.

• 12th Week - The fetus will be fully differentiated into male or female, with its eyes moved to the front of the face while the eyelids remain closed together.

Give your Little One the Best-Secured Life

As an expectant parent, you might be wondering about the growth of your baby in the uterus. However, have you planned to secure their future health - with biological resources? At Cryoviva, we offer advanced stem cell preservation facilities to help you bank your little one[ stem cells and their numerous benefits in order to safeguard your entire family’s health.