50 Amazing Pregnancy Facts You Should Know

The journey of an egg transforming into a full-grown baby in a woman’s womb is extraordinary, making pregnancy a unique experience. It is also the time when a woman learns many new and fascinating things that she did not know before.

Before you got pregnant, we bet you didn’t know that babies cry or hear you in the womb! Right? If you are nodding in agreement and want to know more of such interesting facts, read on.

In this MomJunction post, we have compiled a few pregnancy facts that’ll make you look forward to and embrace your journey of becoming a mother. In the process, we also debunk a few pregnancy myths.

Pregnancy Facts You Probably Didn’t Know Before

  1. The average duration of pregnancy is 280 days. But it can be longer too. In 1945, Beulah Hunter, a 25-year-old woman from Los Angeles, gave birth to a healthy baby girl after being pregnant for 375 days (1). It was the longest recorded pregnancy!
  1. During pregnancy, an actual organ called placenta is developed in the uterus. It helps to provide nutrients and oxygen to the fetus.

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  1. After a couple of months of development, babies begin to pee in the womb. And sometimes they tend to swallow their own pee.
  1. Your uterus can grow up to 500 times its original size during pregnancy (2).
  1. During pregnancy, the fetus can send stem cells to the mother to repair any damage. It means your baby can heal you right from when it is in your womb (3).
  1. When the fetus is about six months old, it develops fingerprints and footprints. The ridges are formed in three patterns that are classified under whorls, loops, and arches. These are formed on palms, fingertips, and soles. Not many know that fingerprints help us grasp objects.
  1. The world’s heaviest baby was born in 1879 to Giantess Anna Bates. He weighed 22lb (9.98kg) and measured 28in (71.12cm). Unfortunately, he died after 11 hours.
  1. The world’s smallest baby! In December 2018, an infant born in San Diego, California, weighed just 8.6 ounces at birth. She was kept in the NICU for about five months and gained up to 5.6 pounds. She is now healthy.
  1. Women tend to experience some skin changes like brown patches on the face around the cheeks, nose, and forehead, dark line from the navel to the pubic area, stretch marks, acne etc., during their pregnancy. This mainly occurs due to hormonal changes, however, it will fade away after the delivery (4).

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  1. Babies usually develop teeth during their first year. But did you know that one in 2000 infants are born with teeth? These are termed as natal teeth. Nonetheless, doctors might remove them as they may cause certain problems such as injury to the tongue, the infant biting the mother during breastfeeding, or the baby may be inhaling the tooth (5).
  1. Foot size increases! After giving birth to your baby, you may notice your foot size to be one inch bigger. That is because of certain hormones that relax your ligaments. This change is usually more permanent when you grow old (6).
  1. Your baby can hear in the womb and respond to the sounds coming from outside. By the end of the 24th week, the fetus can actively listen to you. This is the right time to bond and communicate with your baby (7).
  1. Pregnancy can give you a super sense of smell! Now you know that you are not imagining things, and what you are smelling is right.

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  1. Although many old wives’ tales are just myths, there are a few that are valid. One such theory is that pregnant women suffering from severe heartburn could give birth to babies with hair (8).
  1. A new mother could experience forgetfulness quite often. This is called ‘mommy brain,’ which is common among most women. So yes, you are not the only one forgetting things during pregnancy.
  1. Craving food during pregnancy is normal. But some women also develop cravings for non-food items such as paper or hair, and this weird but real condition is called Pica!

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  1. Nursing mothers start leaking milk from their breast when they hear babies cry. It is said that oxytocin is released in the blood when a woman hears a cry, and that causes milk let-down.
  1. Igbo-ora, a town in Nigeria, has the highest number of twin births, because of which it is called the land of twins.

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  1. During pregnancy, the blood volume increases by 50%, to meet the increased blood flow requirement for the baby and you (9).
  1. The milk ducts are completely developed during the second trimester of pregnancy. Your breasts may feel big but the milk does not come out till delivery .
  1. Is your husband experiencing any pregnancy symptoms such as cravings, morning sickness, and anxiety? Well, it is a real condition referred to as couvade syndrome or sympathetic pregnancy.

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  1. In Ancient Egypt, it was believed that if a pregnant woman peed on barley and wheat and if they sprouted, pregnancy was confirmed. It was also said that if barley grew, it would be a boy, and if wheat sprouted, then it would be a girl.
  1. Heard of pregnancy glow? That’s real! As the blood volume increases during pregnancy, and there is increased estrogen hormone, pregnant women will have glowing skin and shiny hair.
  1. Your fetus will develop taste buds during 13-14 week. This is the time when your baby can taste some strong and pungent flavors.

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  1. Sweating and more sweating! As the blood volume increases when you are pregnant, your body temperature increases. Your body starts sweating more to cool you down.
  1. You might notice a change in your voice when you are pregnant. That is because your vocal cords may get swollen, altering your tone.
  1. Twin pregnancy fact! Twins start bonding with each other right from when they are in the womb. Every twin set is different, but they do share a special bond.

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  1. Women produce more estrogen in one pregnancy than non-pregnant women can in their entire life!
  1. Morning sickness is not limited to the mornings. It can be experienced during afternoons and evenings too.
  1. Besides nourishing the fetus, the placenta can protect your little one from infections too by transferring protective antibodies from your body to your fetus.
  1. Your baby could be dreaming in the womb. Scientists have observed rapid eye movement of the fetus when it is in the womb, and believe it is due to dreaming.

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  1. Hormonal changes during pregnancy could affect your vision. But there is nothing to worry about, as it is a temporary condition.
  1. It has been scientifically proven that nipple stimulation can induce labor naturally. This technique releases oxytocin from your body, which triggers contractions.
  1. In around five months of gestation, the fetus will develop soft and fine hair referred to as lanugo. It usually sheds away in the following months, but some babies are born with it.

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  1. Only 3 to 5% of the babies are born on the due date. So if you are running late, do not panic.
  1. Pseudocyesis is a term given for false pregnancy. It causes many pregnancy symptoms, but the woman is not pregnant. Strange, right?
  1. You might poop during labor. This is a common occurrence and not something you should be embarrassed about.
  1. You might experience minor gum and nose bleeding while pregnant.
  1. Your baby when born has more bones than you. However, some bones fuse while the baby is growing up.
  1. Babies repeatedly yawn in the womb (10).

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  1. Your baby first passes poop in the womb, early on in pregnancy (11).
  1. You would be delighted to know what all babies can do in the womb. Many ultrasounds have detected the fetuses clapping hands, smiling and making expressions, and sucking their thumbs in the womb (12).
  1. Orgasms could induce labor some times during late pregnancy (13).
  1. Do you get weird dreams? Pregnant women commonly get vivid and strong dreams, which are usually frightening. Talking about the dream with someone can help you take it off your mind (14).
  1. Pregnancy could bring changes in the mother’s brain too (15).

You must have come across a lot of myths while you are pregnant. Some common ones are debunked here:

  1. Myth: Your belly shape/size reveals the gender of the baby.

Fact: The shape or size of the pregnant belly has nothing to say about your baby’s gender. So, if someone tells you that you would deliver a girl or a boy just by looking at your belly, do not believe it.

  1. Myth: Eating papaya during pregnancy can cause miscarriage.

Fact: Fully ripe papaya does not harm your pregnancy. However, the presence of latex in unripe or semi-ripe papaya may cause uterine contractions (16).

  1. Myth: It is dangerous to exercise during pregnancy.

Fact: Not every pregnant woman is at risk due to exercise. So it is better to consult your doctor before doing so and do it under the guidance of an expert trainer.

  1. Myth: Eat for two when you are pregnant.

Fact: You do not have to eat for two while you are pregnant. Although your nutrition should improve, you will need only 300 calories extra during pregnancy.

  1. Myth: Pregnant women should not drink coffee.

Fact: According to the American College of Obstetricians and Gynaecologists, consuming less than 200mg caffeine is not harmful in pregnancy (17).

Did your pregnancy get a little more exciting and interesting with these facts? Go ahead and share them with other expecting mothers too. Pregnancy is a wonderful journey and someone has rightly said, ‘there is no better feeling than the movement of life inside you.’ So, cherish every moment of your pregnancy!


MomJunction's articles are written after analyzing the research works of expert authors and institutions. Our references consist of resources established by authorities in their respective fields. You can learn more about the authenticity of the information we present in our editorial policy.
1. The Amazing Longest Human Pregnancy; New health Guide
2. Wonder within wonder; University of Pennsylvania
3. G. S. Dawe, X. W. Tan, and Z Ciao; Cell Migration from Baby to Mother; Cell Adhesion and Migration (2007)
4. Skin conditions during pregnancy; The American College of Obstetricians & Gynaecologists (2018)
5. Natal teeth; Stanford Children’s Health
6. Why your feet get bigger as you age; Harvard Medical School
7. Reproductive Health and The Workplace; National institute for Occupational Safety and Health
8. K. Costigan, H. L. Sipsma, and J. A. Dipietro; Pregnancy folklore revisited: the case of heartburn and hair; Birth Issues in Perinatal Care (2006)
9. F. Hytten; Blood volume changes in normal pregnancy; Clinics in haematology (1985)
10. N. Greenfieldboyce; When fetuses yawn in the womb; (2012)
11. Meconium Aspiration; Health Encyclopedia: University of Rochester Medical Center
12. M. Michelson; Confessions of prenatal ultrasound techs; Akron Children’s Hospital (2015)
13. Inducing labor; (2017)
14. Strange dreams and nightmare; Health Education and Training
15. Pregnancy may change mom’s brain for years afterward; Duke Initiative for Science & Society
16. Moderate caffeine consumption during pregnancy; Obstetrics and Gynaecology (2010)
17. A. Adebiyi, P. G. Adaikan, and R. N. Prasad; Papaya (Carica papaya) consumption is unsafe in pregnancy: fact or fable? Scientific evaluation of a common belief in some parts of Asia using a rat model; The British Journal of Nutrition (2002)