Curious to know your due date?
Our easy-to-use pregnancy calculator is the number one most popular way to calculate your due date based on the date of your last menstrual period.
Your baby is due:
Jul31
Estimated Date of Conception: Nov 07, 2021
(133 weeks 4 days or 33 months)
This is based on the cycle length provided, not an average cycle length of 28 days, however it is still an estimate.You are 335% of the way through your pregnancy.
335%
Weekly Development
Week 1 & 2
Weeks 1 & 2 of your pregnancy is Oct 25, 2021 - Nov 07, 2021
Baby Conceived
It's ovulation time. If sperm and egg meet, you're on your way to pregnancy.
Week 3
Week 3 of your pregnancy is Nov 08, 2021 - Nov 14, 2021
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. Once there's enough hCG in your urine, you'll get a positive pregnancy test result.
Week 4
Week 4 of your pregnancy is Nov 15, 2021 - Nov 21, 2021
Positive Pregnancy Test
Your baby is an embryo made up of two layers, the hypoblast and the epiblast. The primative 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
Week 5 of your pregnancy is Nov 22, 2021 - Nov 28, 2021
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
Week 6 of your pregnancy is Nov 29, 2021 - Dec 05, 2021
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
Week 7 of your pregnancy is Dec 06, 2021 - Dec 12, 2021
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
Week 8 of your pregnancy is Dec 13, 2021 - Dec 19, 2021
The respiratory system is forming now. Breathing tubes extend from the throat to the branches of the developing lungs.
Week 9
Week 9 of your pregnancy is Dec 20, 2021 - Dec 26, 2021
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
Week 10 of your pregnancy is Dec 27, 2021 - Jan 02, 2022
Your baby's organs are growing and beginning to mature. The baby's head comprises half the length of the body.
Week 11
Week 11 of your pregnancy is Jan 03, 2022 - Jan 09, 2022
Fingers and toes have separated and the bones are beginning to harden. External genitalia has almost completely formed.
Week 12
Week 12 of your pregnancy is Jan 10, 2022 - Jan 16, 2022
The kidneys can now secrete urine and the nervous system is maturing. You 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
Week 13 of your pregnancy is Jan 17, 2022 - Jan 23, 2022
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
Week 14 of your pregnancy is Jan 24, 2022 - Jan 30, 2022
Your baby's facial muscles are getting a workout as he squints, frowns, grimaces and practices his first smile for you.
Week 15
Week 15 of your pregnancy is Jan 31, 2022 - Feb 06, 2022
Your baby is looking more like a baby with legs 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.At your doctor's visit, he should offer you a quad screening test to check for Down's syndrome or other chromosomal abnormalities.
Week 16
Week 16 of your pregnancy is Feb 07, 2022 - Feb 13, 2022
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
Week 17 of your pregnancy is Feb 14, 2022 - Feb 20, 2022
Baby's skeleton is changing from soft cartilage to bone and 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. Mom's breasts may have increased a full bra size.
Week 18
Week 18 of your pregnancy is Feb 21, 2022 - Feb 27, 2022
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 noticable now but he may hide them during an ultrasound. Are you feeling kickes and punches? Baby's hearing is also developing, so you may want to start talking to your baby.
Week 19
Week 19 of your pregnancy is Feb 28, 2022 - Mar 06, 2022
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
Week 20 of your pregnancy is Mar 07, 2022 - Mar 13, 2022
Your baby weighs about 10 ounces and is the size of a small 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. Mom can expect to gain about 1/2 lb per week for the rest of her pregnancy.
Week 21
Week 21 of your pregnancy is Mar 14, 2022 - Mar 20, 2022
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
Week 22 of your pregnancy is Mar 21, 2022 - Mar 27, 2022
Senses are growing stronger. Now she can hear your heart beat, your breathing and digestion. Sense of sight is becoming more fine-tuned and he can preceive light and dark. Hormones are now developing which will the organs the commands they need to operate.
Week 23
Week 23 of your pregnancy is Mar 28, 2022 - Apr 03, 2022
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
Week 24 of your pregnancy is Apr 04, 2022 - Apr 10, 2022
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
Week 25 of your pregnancy is Apr 11, 2022 - Apr 17, 2022
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
Week 26 of your pregnancy is Apr 18, 2022 - Apr 24, 2022
Brain-wave activity is on high That means baby can hear noises and respond to them with an increase pulse rate or movement. Eyes are beginning to open but they don't have much pigmentation. That will develop over the next couple months and may even continue to change until she's about 6-months-old.
Week 27
Week 27 of your pregnancy is Apr 25, 2022 - May 01, 2022
Start talking to your baby
Baby may recognize both your and your partner's voices. This is the time to read and even sing to your baby. She now has taste buds so when you eat spicy food, your baby will be able to taste the difference in the amniotic fluid. Her mealtime comes about two hours after yours. Feel some belly spasms? Those are likely hiccups from that spicy food. It doesn't bother the baby as much as you. Baby also has settled in to a regular sleep cycle, but it may be different from mom's.
Week 28
Week 28 of your pregnancy is May 02, 2022 - May 08, 2022
During the third trimester the brain triples in weight adding billions of new nerve cells. Senses of hearing, smell and touch are developed and functional. Your baby is having different sleep cycles, including rapid eye movement. That means she's dreaming.
Week 29
Week 29 of your pregnancy is May 09, 2022 - May 15, 2022
Baby can breathe
Baby's bones are soaking up lots of calcium as they harden so be sure to consume good sources of calcium. We recommend taking Nordic Naturals and Fairhaven Health supplements.
Week 30
Week 30 of your pregnancy is May 16, 2022 - May 22, 2022
Baby's brain is taking on characteristic grooves and indentations to allow for an increased amount of brain tissue. Bone marrow has taken over the production of red blood cells. This means she'll be better able to thrive on her own when she's born Baby is now weighing about 3 lbs and is 11 inches.
Week 31
Week 31 of your pregnancy is May 23, 2022 - May 29, 2022
Baby's brain is developing faster than ever and he's processing information, tracking light and perceiving signals from all five sense. She's probably moving a lot, especially at night when you're trying to sleep. Take comfort that all this activity means your baby is healthy. Mom may start feeling some Braxton Hicks contractions.
Week 32
Week 32 of your pregnancy is May 30, 2022 - Jun 05, 2022
Baby can focus on large objects not too far away; toenails and fingernails have grown in along with real hair. He's practicing swallowing, breathing, kicking and sucking. All key skills for thriving after birth.
Week 33
Week 33 of your pregnancy is Jun 06, 2022 - Jun 12, 2022
Immune system is maturing
The bones in your baby's skull are still pliable which makes it easier for her to fit through the birth canal. Your uterine walls are becoming thinner allowing more light to penetrate your womb. That helps baby differentiate between night and day.
Week 34
Week 34 of your pregnancy is Jun 13, 2022 - Jun 19, 2022
Baby's fat layers are filling her out and will help regulate body temperture when she's born. If your baby is a boy, the testicles are making their way down from the abdomen to the scrotum.
Week 35
Week 35 of your pregnancy is Jun 20, 2022 - Jun 26, 2022
Kidneys are fully developed and her liver can process some waste products. Most of her physical development is complete. She'll spend the next few weeks gaining weight and adding baby fat. Baby is settling lower into the pelvis preparing for delivery and this is called "lightening".
Week 36
Week 36 of your pregnancy is Jun 27, 2022 - Jul 03, 2022
Hopefully your baby is in a head-down position. If not, your practitioner may suggest an external cephalic version to manipulate your baby into a head down position. The vernix caseosa has now disappeared.
Week 37
Week 37 of your pregnancy is Jul 04, 2022 - Jul 10, 2022
Baby is considered full term
Baby is taking up most of the room in your womb so he's only kicking and poking you, no more somersaults. Baby is sucking her thumb, blinking eyes and inhaling and exhaling amniotic fluid.
Week 38
Week 38 of your pregnancy is Jul 11, 2022 - Jul 17, 2022
Baby's eyes right now are blue, gray or brown but once they're exposed to light they may change color or a shade. The lanugo, the fine downy hair that covered his body for warmth is falling off in preparation for delivery. Her lungs have strenthened and her vocal cords have developed. That means she's ready for her first cry.
Week 39
Week 39 of your pregnancy is Jul 18, 2022 - Jul 24, 2022
Baby is ready to make his debut. He's adding more fat as his pinkish skin turns white or white-grayish. He won't have his final pigment until shortly after birth.
Week 40
Week 40 of your pregnancy is Jul 25, 2022 - Jul 31, 2022
This is the official end of your pregnancy but because due dates are just a calculation he might be "late." No need to worry, your body knows the right time to go into labor, or your doctor may suggest you be induced. At birth your baby's eye sight is a little blurry since central vision is still developing. Just say hello and he'll recognize your voice.
Pregnancy Milestones
After fertilization and implantation, your baby is just an embryo, that is a set of cells from which all organs and body parts will develop. It will be exciting to see how fast your baby grows.
At the beginning of the second trimester, your baby is about 3 1/2 inches long and weigh about 1 1/2 ounces. Tiny, unique fingerprints are now in place, and the heart pumps 25 quarts of blood a day. As the weeks go by, your baby's skeleton starts to harden from rubbery cartilage to bone, and he or she develops the ability to hear. You're likely to feel kicks and flutters soon if you haven't already.
By the end of the second trimester, your baby is about 14-1/2 inches and weighing around 2 pounds.
Pregnancy Calendar and Due Date Calculator
Calculate Based On:How Soon Can I Take a Pregnancy Test?
A missed menstruation cycle is one of the earliest signs of pregnancy. That’s why we usually recommend waiting until you’ve missed your period before taking a pregnancy test. If you can’t wait that long and you know the day of your last period we can calculate possible conception and your pregnancy due date.
Did You Get a Positive Test? Here's What to do Next.
If you would like to speak to someone about your pregnancy, click the Chat now button below or call us toll free at 1-800-672-2296. You can also explore our numerous articles about how to have a healthy pregnancy.
