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Pregnancy Week By Week Pictures

Pregnancy Week by Week Pictures: A Visual Guide to Your Baby’s Development

Pregnancy is an extraordinary journey, filled with anticipation and wonder. As your baby grows and develops within your womb, your body undergoes remarkable changes to accommodate this new life. To help you visualize this incredible process, we present a comprehensive guide with pregnancy week by week pictures, offering a glimpse into your baby’s development from conception to birth.

Week 1-2: The Miracle of Conception

During the first two weeks of pregnancy, your body prepares for the arrival of a new life. The fertilized egg, known as a zygote, travels through the fallopian tube towards the uterus. As it divides and multiplies, it forms a blastocyst, which implants into the uterine lining.

Week 3-4: The Embryonic Stage Begins

The blastocyst develops into an embryo, consisting of three layers: the ectoderm, mesoderm, and endoderm. These layers will eventually form all the organs and tissues of your baby’s body. The embryonic heart begins to beat, and the neural tube, which will become the brain and spinal cord, starts to form.

Week 5-6: The Fetus Takes Shape

The embryo is now known as a fetus, and its facial features begin to develop. The eyes, nose, and mouth start to take shape, and the limbs begin to sprout. The heart is fully formed and pumps blood throughout the body.

Week 7-8: The Baby’s Heartbeat Can Be Detected

Your doctor may be able to detect your baby’s heartbeat using a Doppler ultrasound. The fetus continues to grow rapidly, and the placenta, which provides nourishment and oxygen to the baby, begins to develop.

Week 9-10: The Baby’s Fingers and Toes Form

The fetus’s fingers and toes start to form, and the nails begin to grow. The eyelids fuse shut, and the external genitalia begin to develop. The fetus is now about the size of a grape.

Week 11-12: The Baby’s Gender Can Be Determined

During this time, the fetus’s gender can be determined through an ultrasound or blood test. The baby’s bones begin to harden, and the muscles start to develop. The fetus is now about the size of a lime.

Week 13-14: The Baby’s Movements Can Be Felt

You may start to feel your baby’s movements, known as quickening. The fetus’s hair begins to grow, and the ears are fully formed. The fetus is now about the size of a peach.

Week 15-16: The Baby’s Skin Thickens

The fetus’s skin thickens and becomes covered in a fine layer of hair called lanugo. The baby’s eyes begin to open, and the reflexes start to develop. The fetus is now about the size of an avocado.

Week 17-18: The Baby’s Hearing Develops

The fetus’s hearing develops, and it can respond to sounds. The baby’s movements become more coordinated, and the heartbeat can be heard clearly through a stethoscope. The fetus is now about the size of a bell pepper.

Week 19-20: The Baby’s Bones Strengthen

The fetus’s bones continue to strengthen, and the teeth begin to develop. The baby’s skin becomes smoother, and the lanugo hair starts to shed. The fetus is now about the size of a banana.

Week 21-22: The Baby’s Taste Buds Develop

The fetus’s taste buds develop, and it can distinguish between sweet and sour flavors. The baby’s fingernails and toenails are fully formed. The fetus is now about the size of a coconut.

Week 23-24: The Baby’s Lungs Begin to Mature

The fetus’s lungs begin to mature, and it starts to practice breathing. The baby’s skin becomes pinker, and the body fat increases. The fetus is now about the size of a cantaloupe.

Week 25-26: The Baby’s Eyesight Develops

The fetus’s eyesight develops, and it can focus on objects. The baby’s hair continues to grow, and the eyelashes and eyebrows become more prominent. The fetus is now about the size of a head of cauliflower.

Week 27-28: The Baby’s Brain Develops Rapidly

The fetus’s brain develops rapidly, and it starts to control body movements. The baby’s immune system begins to function, and the lungs continue to mature. The fetus is now about the size of an eggplant.

Week 29-30: The Baby’s Fat Stores Increase

The fetus’s fat stores increase, and the skin becomes smoother. The baby’s nails are fully grown, and the hair on the head becomes thicker. The fetus is now about the size of a pineapple.

Week 31-32: The Baby’s Bones Become Harder

The fetus’s bones become harder, and the skull starts to fuse. The baby’s lungs are almost fully developed, and it can breathe on its own. The fetus is now about the size of a butternut squash.

Week 33-34: The Baby’s Head Engages

The fetus’s head may engage in the pelvis, preparing for birth. The baby’s movements become less frequent, but they are stronger. The fetus is now about the size of a honeydew melon.

Week 35-36: The Baby’s Skin Becomes Pinker

The fetus’s skin becomes pinker, and the vernix caseosa, a protective coating, covers the skin. The baby’s lungs are fully mature, and it can survive outside the womb. The fetus is now about the size of a small watermelon.

Week 37-38: The Baby’s Position Changes

The fetus’s position may change as it prepares for birth. The baby’s head may turn down, and the body may align with the birth canal. The fetus is now about the size of a large watermelon.

Week 39-40: The Baby Is Ready to Be Born

The fetus is fully developed and ready to be born. The baby’s weight and length may vary, but it is typically around 7-9 pounds and 19-21 inches long. The baby’s lungs are fully mature, and it can breathe on its own.

The Miracle of Birth

After 40 weeks of pregnancy, the baby is ready to enter the world. Labor begins with contractions, which gradually increase in intensity and frequency. The cervix dilates, allowing the baby to pass through the birth canal. With the help of medical professionals, you will welcome your precious newborn into the world.


Pregnancy is a transformative journey, marked by incredible changes and milestones. Our pregnancy week by week pictures provide a visual representation of your baby’s development, helping you connect with this extraordinary process. As you navigate this journey, remember that every week brings new wonders and brings you closer to meeting your little one.

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