Pregnancy Timeline by London Chambers

londonchambers — 2025-09-04 03:51:05 UTC

DNA from a Male and Female known as the Sperm and Egg

Week 0

londonchambers — 2025-09-04 03:54:10 UTC

An egg is fertilized by a Sperm and implanted in the female's uterus.

Week 2

londonchambers — 2025-09-04 03:57:43 UTC

Two weeks after Conception, the blastocyst is the size of a poppy seed. Cells start to organize themselves, creating an embryo. The placenta starts to form during this time. This is also when the amniotic sac forms to provide a layer of protection to the fetus.

Week 3

londonchambers — 2025-09-04 04:01:42 UTC

3 weeks after fertilization. Week 5: The Embryo is less than a 10th of an inch long, and the beginning of the nervous system is in place. A few days later, the top of the tube is bulging outwards, becoming a brain. The heart tube will begin pulse by the end of the 5th week.

londonchambers — 2025-09-04 04:05:20 UTC

Days go by, and the embryo is changing rapidly. A heart tube begins to beat, the embryo lengthens, the backbone forms, and the cells bulge out, becoming arms and legs. Your OBGYN or healthcare provider can detect pulses in the cluster of cells that will form the heart on an vaginal ultrasound

Week 5 - 7

londonchambers — 2025-09-04 04:09:42 UTC

From a 5-week embryo to a 7-week embryo lot is occurring: the genes switch on/off, making different proteins, proteins build structures (skin, bone, eye), and do jobs ( carry oxygen, and move muscles). Then the cells communicate with chemical signals that tell them their location and role in the body, DNA unciols and genes from tissues, organs, and even determines sex

Week 7

londonchambers — 2025-09-04 04:16:30 UTC

Week 7, boys and girls look alike. This isn't just on the outside perspective, inside, there are two gonads which can become testicles or ovaries, in the case it's a boy or a girl. This is when testosterone will travel throughout the body, and if it gets to the genitals, then the cells will build a penis. But if met with two X chromosomes and no Y, different genes are activated, and the gonads will become ovaries.

Week 8

londonchambers — 2025-09-04 04:18:12 UTC

8 weeks after fertilization, the embryo becomes a fetus. Almost all organs are placed, but are not actively working yet. Eyes and ears start to become visible and form. The length of the fetus is about an inch, and it weighs less than a third of an ounce. The umbilical cord is fully developed by this point and helps transport oxygen and blood to the fetus.

Week 10

londonchambers — 2025-09-04 04:21:52 UTC

10 weeks is when the arms, hands, fingers, feet, and toes are fully formed. Webbing is gone! Fingernails and toenails start to develop, and external ears form. This is when the external genitals start to form but not able to be seen through ultrasound yet.

week 16

londonchambers — 2025-09-04 04:26:56 UTC

( 16 weeks) 4 months after fertilization, the fetus is forming hard bone in the hand and the leg. Can hear you speak and can react to light by turning away.

20 weeks

londonchambers — 2025-09-04 04:31:31 UTC

At 20 weeks, the fetus's nails grow towards the end of the fingers, and the brain is responsible for its 5 senses that start to develop. Baby starts having regular sleep and wake times.

Week 9

londonchambers — 2025-09-04 04:42:23 UTC

Week 9, Teeth and taste buds are forming, as well as the muscles. This point where the fetus is looking more like a human than a tadpole. Heart heartbeat can be heard with a Doppler ultrasound.

Week 11

londonchambers — 2025-09-04 04:46:02 UTC

11 weeks is when the fetus will begin to start moving ( like closing a fist or opening its mouth. Knees, elbows, and ankles are working, but you cannot feel any kicks at this point. Bones begin to harden, and the skin is still transparent.

Week 12

londonchambers — 2025-09-04 04:47:58 UTC

Week 12: All organs are present and continue to develop to become functional. Digestive and urinary systems start working, and the liver produces bile. The fetus is drinking and peeing amniotic fluid

After 12 weeks, the chances of miscarriage drop considerably.

londonchambers — 2025-09-04 04:48:39 UTC

second trimester

londonchambers — 2025-09-04 04:50:11 UTC

Most people think this is the best part of pregnancy. Morning sickness relief comes, and discomfort has faded from early pregnancy. This is when movement can be felt as the fetus flips and turns. You also get to find out the gender of your baby during this trimester

week 13- 15

londonchambers — 2025-09-04 04:53:15 UTC

The fetus’s vocal cords develop, and its head starts growing proportionally to its body. The skin thickens and becomes less transparent, and fine hair begins to grow. The fetus can now start moving its fingers to its mouth and moving its head. Genitals are fully developed, and fingerprints are formed. Within the 15th week, the intestines and ear are moving to their permanent places in the body. A fetus is practicing breathing while its lungs are developing. Might even see a smile!

17-19 weeks

londonchambers — 2025-09-04 05:00:02 UTC

The fetus's skin is still thin, but it starts to put on fat. The skin is covered in a whitish coating called vernix. In the 18th week, the fetus will be covered in lanugo, a peach fuzz hair. This keeps the fetus warm and provides more protection. In the 19th week, most people can feel the fetus kick and punch.

24 weeks

londonchambers — 2025-09-04 05:00:40 UTC

6 months since fertilization. The baby will weigh over 1 lb and be 9-12 inches long. The fetus's lungs are fully developed.

First Trimester

londonchambers — 2025-09-04 05:03:00 UTC

Anatomy scan

londonchambers — 2025-09-04 15:31:46 UTC

20 weeks is when you will have the full anatomy scan with your doctor's office checking limbs, brain, and spin.

23 weeks

londonchambers — 2025-09-04 15:37:32 UTC

If a fetus is born during this time, the fetus is viable with intensive care

26 weeks

londonchambers — 2025-09-05 02:30:11 UTC

A fetus makes the melanin that gives it the color of its skin and eyes. The lungs of the fetus start to make surfactant, which is a substance to help it breathe after birth.

27-28 weeks

londonchambers — 2025-09-05 02:31:38 UTC

The fetus will have eyelashes at this point. You may also notice that the fetus is beginning to turn head down, which gets it ready for birth. The fetus is 14-15 inches long and 2-3 pounds.

Third Trimester

londonchambers — 2025-09-05 02:31:45 UTC

The fetus will start to put on weight and grow rapidly during the third trimester. This is the time to eat healthy so the baby gets all the nutrients it needs. Doctor visits become more regular

29 - 32 Weeks

londonchambers — 2025-09-05 02:36:03 UTC

Kicks and jabs will be more present since the fetus is getting cramped within the amniotic sac. A fetus can control its own body heat at this time and can process more information/stimuli. Organs are all well-formed and ready for birth expect the lungs and brain.

34 Weeks

londonchambers — 2025-09-05 02:45:58 UTC

The fetus is getting ready for labor and birth by moving into a head-down position. Also during this time the vernix ( waxy, greasy coating) is getting thicker. Birth May happen this week or within the next few weeks.

35 Weeks

londonchambers — 2025-09-05 02:47:09 UTC

The brain and lungs of the fetus are still developing. Fun fact is that the baby's brain is weight 2/3 of what it will at 39-40 weeks.

londonchambers — 2025-09-05 02:47:50 UTC

Emergency c-section can be scheduled at this point, but waiting until at least 39 weeks is best for the fetus.

36 weeks

londonchambers — 2025-09-05 02:49:02 UTC

It's cramped in your womb if the movements of the fetus decline, you should contact your OB or health care provider. This is the time to start noticing movement changes of the baby.

39 weeks

londonchambers — 2025-09-05 02:50:51 UTC

The fetus is full term!! Mom and baby made it! If noticing signs of labor ( water breaks, or contractions) Call your provider!

37-38 weeks

londonchambers — 2025-09-05 02:52:36 UTC

You can go into labor anytime. Mom will feel very uncomfortable as the fetus drops down into the pelvis for birth.

40 weeks

londonchambers — 2025-09-05 02:53:25 UTC

Due date Week. Call your doctor as you wait for signs of labor, or go in for your induction date. WELCOME BABY.

Bronfenbrenner's ecological system theory

londonchambers — 2025-09-05 03:05:57 UTC

Looking at the risks and protective factors in the first trimester of pregnancy, which is weeks 0-12, through the perspective of Bronfenbrenner's Ecological system.

Microsystem
- Risks: Smoking and alcohol usage, domestic violence, and poor nutrition.
- Protective: Supportive partner, prenatal vitamin with folic acid, and safe/stable home.
Mesosystem
- Risks: Little to no communication with family and healthcare provider.
- Protective: Partner and Family come to prenatal visits.
Exosystem
- Risks: Stress at the job and lack of insurance
- Protective: Access to healthcare, workplace flexibility.
Macrosystem
- Risks: Lack of healthcare access, stigma with pregnancy.
- Protective: Social relationships value prenatal care, economic stability.

First 13 weeks

londonchambers — 2025-09-05 03:10:52 UTC

This is the most critical time for prenatal development. Most common for miscarriages occur.

weeks 3-8

londonchambers — 2025-09-05 03:15:00 UTC

Exposure to alcohol, drugs, infections, and radiation can cause chromosomal abnormalities, which can cause miscarriage.

Prenatal vitamins will be suggested by your health care provider, particularly folic acid, and avoiding harmful substances such as alcohol and drugs, along with maintaining a healthy diet, contribute to effective early prenatal care.

9-40 weeks

londonchambers — 2025-09-05 03:17:50 UTC

The biggest risk during this time in pregnancy is preterm labor, gestational complications like preeclampsia, and gestational diabetes.

But consent prenatal care/visits, healthy lifestyle, support system.

Bronfenbrenner’s Ecological Systems Theory

londonchambers — 2025-09-05 03:45:45 UTC

Looking at risks and protective factors in the second trimester of pregnancy, which is 13-27 weeks, from the perspective of ecological systems.

Microsystem

Risks: Maternal stress, gestational diabetes risk, and little to no rest.

Protective: Healthy diet, supportive partner/family, consistent prenatal visits with a doctor.

Mesosystem

Risks: Disconnection between health ( medical advice) and family practices.

Protective: Coordination between the healthcare provider, family, and other supports.

Exosystem

Risks: Maternity accommodations not provided by the employer, limited childcare for other children.

Protection: Employer flexibility, prenatal classes.

Macrosystem

Risks: Cultural attitudes disregarding maternal rest.

Protective: Cultural practices encouraging maternal rest.

Bronfenbrenner’s Ecological Systems Theory

londonchambers — 2025-09-05 03:49:20 UTC

Looking at risks and protective factors in the third trimester of pregnancy, which is 28-40 weeks, from the perspective of ecological systems.

Microsystem

- Risks: Preeclampsia, preterm labor, lack of partner involvement

- Protective: Partner/family support for delivery, healthy lifestyle

Mesosystem

- Risks: Gaps with the healthcare provider and the birth support system

- Protective: Communication between doctors, midwives, and family.

Exosystem

- Risks: Lack of parental leave, financial strain

- Protection: Paid maternity leave, access to hospital resources.

Macrosystem

- Risks: Poverty, policies limiting maternal services

- Protective: Government safety nets, policies promoting safe childbirth, and maternity leave.

Gender Ultrasound

londonchambers — 2025-09-05 04:00:04 UTC

Anatomy Scan Information

londonchambers — 2025-09-05 04:01:36 UTC

londonchambers — 2025-09-05 04:05:59 UTC

Amazing walk-through of 0-40 weeks