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6 weeks of pregnancy is included in the 2nd month of the first trimester. While you are in the 6th week of your pregnancy, your little baby (fetus) is only 4 weeks old. So, what happens in the 6th week of pregnancy? How is baby development at 6 weeks? Let’s see them all!
If the topic of pregnancy week is confusing you, our Pregnancy Calculator will give you the right information. We recommend that you look before you start.
6 Weeks Baby Development
In the 6th week of pregnancy, when looking at the baby’s condition, the length from the top of the head to the bottom is checked for its height. It is difficult to measure the exact length because its newly forming legs are bent.
So, how is the baby at 6 weeks pregnant? It is around 2-4 mm from head to bottom. In the 6th week, growth accelerates and the baby triples in size.
As for baby development at 6 weeks of pregnancy:
- His jawbones, chin and cheeks began to develop.
- Small indentations on both sides of the head form the ear canals.
- The formation of facial lines is still in its early stages.
- Optic bubbles (black dots) began to form, which would later turn into eyes.
- The little bump on the front of the head will form its tiny nose in a few weeks.
- The brain is growing to fill the now formed and enlarged head.
6 Weeks Baby Image

Can You Hear Heartbeat at 6th Week of Pregnancy?
Yes, 6 weeks of pregnancy is one of those special weeks where you can hear the heartbeat. Because the tiny heart of a 6-week-old baby in the womb beats 80 times a minute. The heart at the front of the chest pumps blood to the main blood vessels and beats regularly. And believe me, when you hear this, your heart will start beating much faster. In fact, if you haven’t fully believed that a baby has grown inside you until now, you will be sure when you hear the heartbeat and you will establish your first emotional bond with him.
6 Weeks Pregnancy Ultrasound Images

Your 6-week ultrasound image will look like the one above. It’s not possible for you to see your baby clearly on ultrasound right now, because it’s smaller!
Changes in the Mother at 6 Weeks of Pregnancy
- You must have gained a few pounds by now.
- If you are experiencing nausea and are not eating well, you may have lost weight.
- If this is your first pregnancy, your tummy may not have changed much, or you may just feel that your clothes are a little tight on your waist.
- You may be gaining weight in your legs or breasts.
6 Weeks Pregnancy Image

Symptoms at 6 Weeks of Pregnancy
Hormones released during pregnancy have two functions. They affect the development of the baby as well as change the way your organs function. In other words, the main culprit of pregnancy complaints is hormones. Hormones are chemical messengers that regulate and determine pregnancy in many ways. The 2nd month, including the 6th week, will be the month when the hormones work most intensively.
- Nausea,
- heartburn,
- Constipation,
- Fatigue,
- frequent urination,
- Complaints such as discharge may be among the symptoms of the 6th week of pregnancy.
- Nausea: Nausea in the 6th week of pregnancy is a very normal symptom. It is seen intensely in the first trimester, that is, in the first 3 months. Complaints usually appear or increase within 5 to 8 weeks. 13-14. It is expected that it will decrease in the next weeks.
- Heartburn and Indigestion: Heartburn, boils and indigestion are the most common symptoms of pregnancy. Although it is more severe in the later stages of pregnancy, it can start in the early period. It is usually caused by acid leakage from the stomach into the esophagus. In fact, this is one of the most basic conditions of reflux disease. If you had reflux before pregnancy, this will not be new for you.
Let’s also mention that if you experience a situation such as bleeding at 6 weeks of pregnancy , this may be a harbinger of miscarriage, or it may be in a harmless situation. You should consult your doctor without delay.
What to Consider at 6 Weeks Pregnancy
First Doctor Examination
The first prenatal checkup may be one of the longest you’ll do during pregnancy. If you planned and went to the doctor before you got pregnant, you may have discussed some issues beforehand, but there are many topics to cover at the first appointment.
Be sure to clarify in which ways and at what times of the day you can communicate with your doctor throughout the process. It will be good for you to constantly share your thoughts, feelings, physical condition, symptoms and get ideas. So, what does your doctor want to learn at the first check-up?
- Your doctor will want to listen to your medical history, especially your gynecological history, at the first examination. These are to determine if there are any problems that could cause the birth.
- He or she will ask about your menstrual periods and the last birth control methods you used.
- You must inform if you have had a miscarriage, an abortion, a hospital stay for surgery or other reasons.
- You should tell about the drugs you take or the drugs you are allergic to.
- He or she will also want to know if you have a history of diabetes or other chronic diseases.
- In addition to the tests to determine the blood group, he will also request tests to determine whether the vaccinations you have had in the past (measles, chickenpox, hepatitis, etc.) still provide protection. With the same blood sample, tests that measure immunity to diseases such as HIV, toxoplasma and mumps can also be performed.
- He or she may also ask for a urine sample. Urinalysis is done to detect if there is inflammation in the gallbladder or kidneys.