Week-by-Week Progress:
| Week | Start Date | Description |
|---|---|---|
| Week 1 | June 20, 2025 | Baby Conceived It's ovulation time. If sperm and egg meet, you're on your way to pregnancy. |
| Week 2 | June 27, 2025 | The blastocyst implants in the uterus, beginning early development. |
| Week 3 | July 04, 2025 | Implantation occurs Your baby is a tiny ball of several hundred cells that are rapidly multiplying and burrowing into the lining of your uterus. The cells that become the placenta are producing hCG, the pregnancy hormone. It tells your ovaries to stop releasing eggs and keep producing progesterone. |
| Week 4 | July 11, 2025 | Positive Pregnancy Test Your baby is an embryo made up of two layers, the hypoblast and the epiblast. The primitive placenta is developing and preparing to provide nutrients and oxygen to your growing baby. The amniotic sac is developing and will surround and protect your baby while it continues to grow. |
| Week 5 | July 18, 2025 | Early Embryonic Development Your embryo is now made up of three layers, the ectoderm, the mesoderm, and the endoderm which will later form all the organs and tissues. You might start to feel the first twinges of pregnancy such as tender breasts, frequent urination, or morning sickness. |
| Week 6 | July 25, 2025 | Heartbeat Detectable by Ultrasound Your baby's heart is beating about 160 times a minute and the nose, mouth, and ears are taking shape. Lungs and digestive system are forming organs. |
| Week 7 | August 01, 2025 | Hands and Feet Forming Your baby is forming hands and feet. Key organs like the stomach, liver, and esophagus are beginning to form. Your uterus has doubled in size. The umbilical cord is transferring blood and waste between baby and mother. |
| Week 8 | August 08, 2025 | Respiratory System Forming The respiratory system is forming now. Breathing tubes extend from the throat to the branches of the developing lungs. |
| Week 9 | August 15, 2025 | Baby Moves During Ultrasound Your baby is nearly an inch long now. If you watch closely, you may see your baby move if you have an ultrasound done. |
| Week 10 | August 22, 2025 | Organ Growth and Maturation Your baby's organs are growing and beginning to mature. The baby's head comprises half the length of the body. |
| Week 11 | August 29, 2025 | Fingers and toes have separated and the bones are beginning to harden. External genitalia has almost completely formed. |
| Week 12 | September 05, 2025 | The kidneys can now secrete urine and the nervous system is maturing. Your baby may be curling all 10 toes, practicing opening and closing fingers and sucking a thumb. And mom should have gained from 2-5 lbs. |
| Week 13 | September 12, 2025 | Miscarrige risk decreases Your baby now has unique fingerprints and the kidney and urinary tract are completely functional, that means she's peeing. And if you are having a girl, her ovaries are already full of thousands of eggs. |
| Week 14 | September 19, 2025 | Your baby's facial muscles are getting a workout. He squints, frowns, grimaces and practices his first smile for you. |
| Week 15 | September 26, 2025 | Your baby is looking more like a baby. Legs are growing longer than the arms and all her limbs moving. The ears are properly positioned on the side of her head and the eyes are moving from the side of the head to the front of the face. |
| Week 16 | October 03, 2025 | Baby's heart is pumping about 25 quarts of blood each day. His eyes are working and moving side to side even though the eyelids are still sealed. Mom will have a 'pregnancy glow' due to increased blood supply. |
| Week 17 | October 10, 2025 | Baby's skeleton is changing from soft cartilage to bone. Her heart is now regulated by her brain. She's practicing her sucking and swallowing skills in preparation for that first suckle at your breast or the bottle. |
| Week 18 | October 17, 2025 | Gender reveal time If you're having a girl, her uterus and fallopian tubes are formed and in place. If you're having a boy, his genitals are noticeable now but he may hide them during an ultrasound. Are you feeling kicks and punches? Baby's hearing is also developing, so you may want to start talking to your baby. |
| Week 19 | October 24, 2025 | Baby's brain is designating specialized areas for his 5 senses. Vision, hearing, taste, smell, and touch. A waxy protective coating called the vernix caseosa is forming on his skin to prevent wrinkling. |
| Week 20 | October 31, 2025 | Halfway mark! Baby is about the size of a banana. Her uterus is fully formed this week and she may have tiny primitive eggs in tiny ovaries now. His testicles are waiting for the scrotum to finish growing and will begin their descent soon. |
| Week 21 | November 07, 2025 | Feel all that moving and shaking going on! Baby's arms and legs are in proportion now and movements are much more coordinated. Bone marrow is now helping the liver and spleen produce blood cells. The intestines are starting to produce meconium, the thick tarry looking stool first seen in baby's diaper. |
| Week 22 | November 14, 2025 | Senses are growing stronger. Now she can hear your heartbeat, your breathing and digestion. Sense of sight is becoming more fine-tuned and he can perceive light and dark. Hormones are now developing which will give the organs the commands they need to operate. |
| Week 23 | November 21, 2025 | Premature baby may survive Baby's organs and bones are visible through his skin, which has a red hue because of the developing veins and arteries beneath. He'll become less transparent as his fat deposits fill in. Baby is also developing surfactant which will help the lungs inflate if baby is born prematurely. |
| Week 24 | November 28, 2025 | Baby's face is almost fully formed. Complete with eyelashes, eyebrows, and hair. Right now her hair is white because there's no pigment yet. Between now and 28 weeks, the doctor should send mom for a glucose screening test for gestational diabetes. |
| Week 25 | December 05, 2025 | Baby is gaining more fat and looking more like a newborn. Hair color and texture is in place. His lungs are maturing and preparing for that first breath. You might feel the baby having hiccups. |
| Week 26 | December 12, 2025 | Brain-wave activity is on high. The baby is the size of a head of lettuce. Lungs continue to mature. |
| Week 27 | December 19, 2025 | Start talking to your baby. Start of the third trimester. The brain develops rapidly. |
| Week 28 | December 26, 2025 | Baby can blink. Eyes open, and the baby can blink. Size of an eggplant. |
| Week 29 | January 02, 2026 | Baby begins storing calcium. The baby begins storing calcium in the bones. |
| Week 30 | January 09, 2026 | Baby has regular sleep-wake cycles. The baby is gaining weight and has regular sleep-wake cycles. |
| Week 31 | January 16, 2026 | Baby can distinguish voices. The baby can distinguish voices and respond to sounds. |
| Week 32 | January 23, 2026 | Toenails are fully formed. The baby is the size of a pineapple. Toenails are fully formed. |
| Week 33 | January 30, 2026 | Immune system is developing. The immune system is developing, preparing for life outside the womb. |
| Week 34 | February 06, 2026 | Fingernails have grown. Baby's fingernails have grown, and fat layers are thickening. |
| Week 35 | February 13, 2026 | Baby preparing for birth. The baby is almost fully developed and preparing for birth. |
| Week 36 | February 20, 2026 | Baby may move into a head-down position. The baby may move into a head-down position. |
| Week 37 | February 27, 2026 | Baby's organs are ready for birth. Considered early term. Baby's organs are ready for birth. |
| Week 38 | March 06, 2026 | Baby is gaining weight. Baby is gaining about half a pound per week. |
| Week 39 | March 13, 2026 | Baby is ready to meet the world. Considered full term. Baby is ready to meet the world. |
| Week 40 | March 20, 2026 | Full term! Baby is ready to be born. Full term! Baby is ready to be born. |
Introduction to the Pregnancy Due Date Calculator
The Pregnancy Due Date Calculator is a helpful tool to estimate the date when your baby is expected to arrive. By inputting essential information such as the first day of your last menstrual period (LMP) or conception date, this tool provides an accurate due date to help you prepare for your baby's birth.
Why Use the Pregnancy Due Date Calculator?
Here are some key reasons to use the Pregnancy Due Date Calculator:
Accurate Due Date: Helps estimate your baby’s expected arrival with high accuracy based on your menstrual cycle.
Planning & Preparation: A due date prediction allows you to plan your doctor visits, baby essentials, and arrangements ahead of time.
Tracking Pregnancy Milestones: Use the due date to monitor your pregnancy progress and understand important milestones along the way.
How to Use the Pregnancy Due Date Calculator
Using the calculator is simple:
- Enter the first day of your last menstrual period (LMP) or your conception date.
- Select your average cycle length if known (optional).
- Click "Calculate" to get your due date and pregnancy timeline.
The calculator will estimate your due date and provide a detailed breakdown of your pregnancy stages.
Understanding Your Due Date
Your due date is typically calculated based on the first day of your last menstrual period (LMP), with a standard 28-day cycle. However, if your cycle is longer or shorter, your due date may differ. It's important to note that due dates are only estimates, and the actual birth date may vary by a couple of weeks.
Factors That Influence Your Due Date
The calculator considers several factors to estimate your due date:
Last Menstrual Period (LMP): The first day of your last period is used to calculate your estimated delivery date.
Cycle Length: The length of your menstrual cycle can affect the accuracy of your due date calculation.
Key Considerations
Predicted height estimates are based on averages and may vary depending on factors like nutrition, environment, and overall health. Use these predictions as a guideline and consult a healthcare provider for personalized advice on growth and development.
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