Congratulations! The most beautiful journey of your life has just begun. During these first three months, that is, the first trimester, many amazing things are happening inside your body, even without you even realizing it. Imagine, starting from a cell that is so small that it is impossible to see, today we will talk about the first steps in this miraculous journey that begins with a small cell that is too small to be seen by the eye, and ends with a baby with complete organs.
The first month: The beginning of a little life
During this time, a protective sac of water forms around the fertilized egg. We call this the amniotic sac . This is what helps the growing embryo stay comfortable and safe inside the womb throughout the pregnancy.
It is also during this time that the amazing organ called the placenta begins to develop. Simply put, the placenta is like a bridge between mother and baby. It is what carries the nutrients and oxygen the baby needs from the mother, and it also carries the baby's waste back to the mother's body and removes it.
The baby's face is also starting to take shape. There are two big black circles for eyes. The mouth, lower jaw, and throat are all forming. The amazing thing is, blood cells are forming and blood circulation is starting!
By the end of this month, your baby will be about 6-7 millimeters (1/4 of an inch) long. That's about the size of a grain of rice !
Second month: The time when a shape emerges
Now the baby's facial features are becoming more distinct. The ears are beginning to form as small folds of skin on either side of the head. The tiny buds that will become the arms and legs in the future are beginning to emerge. Fingers, eyes, and toes all form during this second month.
The foundation of the baby's nervous system, the neural tube, which includes the brain and spinal cord, is now well-formed. The digestive system and sensory organs are beginning to develop. Soft cartilage is replaced by strong bones during this time.
It's amazing, isn't it? During this time, the baby starts to move a little, but it takes a while for you to feel it.
At the end of the second month, your baby, now called a fetus, is 2.54 centimeters (about an inch) long. He weighs about 9.45 grams. Another amazing thing is that his head makes up a third of his entire body!
Third month: A little man!
By the end of the third month, your baby is almost fully formed . Your baby now has arms, hands, fingers, legs, and toes. He can clench his fists and open and close his mouth. Fingernails are starting to form on his hands and feet, and his ears are fully formed.
The baby's reproductive organs are also developing, but it's a little difficult to tell the baby's gender with an ultrasound scan at this time. The circulatory system and urinary system are working well. The liver has also started producing bile.
By the end of this month, the baby will be about 7.6 - 10 centimeters (3-4 inches) long and weigh about 28 grams.
Most importantly, the chance of miscarriage decreases significantly after these three months, as all of the baby's major organs have developed. This will give you great peace of mind.
Shall we simply look at these changes?
It's hard to remember everything that happens in these first three months at once, isn't it? Here's a simple summary.
| Month | Major developments | Amount at the end of the month (approximate) |
|---|---|---|
| First month | The amniotic sac and placenta are forming. The face, mouth, jaw, and throat are beginning to form. Blood circulation begins. | 6-7 mm (about the size of a grain of rice) |
| Second month | Facial features are becoming clear. Hands, feet, fingers, eyes, and ears are beginning to form. The neural tube is developing well. Bones are beginning to form. | 2.5 cm (about an inch), 9.5 grams |
| Third month | The baby is almost fully formed. It has hands, feet, fingers, and nails. It can open and close its mouth. The circulatory and urinary systems are working. | 7-10 cm (3-4 inches), 28 grams |
When you see this information, you may be wondering what an amazing thing is happening inside your body. Listen to your body throughout this journey. Get the rest you need, eat nutritious foods, and follow the advice your doctor gives you.
Take-Home Message
- The first 3 months of pregnancy (first trimester) is a very important time when all of the baby's major organs are formed.
- It's normal to feel tired and nauseous during this time. This is because your body is supporting the baby's growth.
- It is very important to take vitamins, such as folic acid, exactly as your doctor prescribes.
- If you notice anything unusual, such as heavy bleeding or severe stomach pain, don't panic and talk to your doctor immediately.
- Enjoy this wonderful journey. A little miracle is happening in your womb!
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