47 Fun Facts About Pregnancy

Doctors count pregnancy weeks from which event?

The first day of the last period is the start point, so a woman is already counted as about two weeks pregnant by the time she conceives.

Why are pregnant women told to avoid soft cheeses like brie and camembert?

They may carry listeria bacteria; a pregnant woman may have only a mild, flu-like illness, yet the infection can cause miscarriage or stillbirth.

The switch from embryo to fetus at about ten weeks marks what milestone?

Its major organs have begun forming by then, though none is fully developed, so the fetal stage is mostly those organs growing and maturing.

Which nutrient is advised before and during early pregnancy to prevent neural tube defects?

Folic acid is advised before conception because neural tube defects arise in the first month of pregnancy, often before a woman knows she is pregnant.

Which sedative, sold in the late 1950s for morning sickness, caused thousands of birth defects?

Thalidomide was withdrawn after the birth-defect link emerged in 1961, yet decades later it was approved to treat the blood cancer multiple myeloma.

Which hormone do pregnancy tests detect in blood and urine?

hCG (human chorionic gonadotropin) keeps the ovary's corpus luteum making progesterone, which sustains the uterine lining in early pregnancy.

What are the harmless 'practice' tightenings before real labour called?

Braxton Hicks contractions can be set off by dehydration or a full bladder, and unlike true labour a bout eases off rather than building stronger and closer together.

Louise Brown, born in England in 1978, was the first baby conceived through which technique?

IVF earned her the nickname 'test tube baby', though she was actually conceived in a Petri dish after her parents had tried for nine years.

What is the term for the first time a mother feels her baby move?

Quickening comes from an old sense of 'quicken', to come to life, since these movements are the first signs of life the mother can feel.

What is 'sympathetic pregnancy', in which a partner shares the symptoms, formally called?

Couvade syndrome is named after 'couvade', rituals in which a father takes to bed during the birth; studies show expectant fathers' hormone levels shift too.

Twins from a single fertilised egg that splits are described as what?

Identical (monozygotic) twins come from one fertilised egg that splits into two embryos, so they share virtually all their DNA.

When one twin dies early in pregnancy and is reabsorbed, what is it commonly called?

A vanishing twin is reabsorbed by the mother or the surviving twin, often with no symptoms, so such losses went unnoticed until early ultrasound scans.

Which surname belongs to 'Octomom', whose 2009 octuplets were the first set to all survive infancy?

Suleman's doctors were expecting seven babies, so the eighth took the delivery team by surprise.

The extremely rare event of conceiving a second baby while already pregnant is called what?

Superfetation leaves two babies at different stages of development in the womb at the same time; in humans it is so rare that only a handful of cases have been reported.

Which animal has the longest gestation of any mammal, at about 22 months?

The African elephant carries a calf for about 22 months, nearly two and a half human pregnancies, so a cow gives birth only once every few years.

What is the light spotting some women notice when an embryo attaches to the womb lining called?

Implantation bleeding tends to come around when a period is due, so it is easily mistaken for a light period before a pregnancy test.

When a very early birth is expected, why is the mother often given steroid injections?

To mature the baby's lungs: the steroids cross the placenta and cut the risk of breathing difficulties and death in babies born too early.

What is 'kangaroo care' for premature babies?

Skin-to-skin holding on a parent's chest began in Bogotá, Colombia, in 1978, when crowded neonatal units lacked enough incubators for small babies.

A pregnancy that reaches or passes 42 weeks is called what?

Post-term means 42 weeks or more; because the risk of stillbirth climbs, the NHS offers to induce labour once a pregnancy reaches 41 weeks.

What is the Latin-derived medical term for a pregnant woman?

A gravida is a pregnant woman; the word comes from Latin 'gravidus', meaning heavy or laden, the same root as 'gravity'.

Which pregnancy complication combines high blood pressure with protein in the urine?

Pre-eclampsia's early signs usually go unnoticed, so routine antenatal checks measure blood pressure and test urine; left untreated, it can cause seizures.

Which 0-to-10 score rates a newborn's condition at one and five minutes after birth?

The Apgar score is named after anaesthetist Virginia Apgar; the five-word mnemonic spelling out her surname was coined about ten years later as a learning aid.

What is a 'show' in late pregnancy?

The mucus plug in the cervix coming away is called a show; it means the cervix is starting to open, though labour may follow quickly or take a few days.

What is 'meconium'?

A newborn's first poo is sticky and tar-like, made from what the baby swallowed in the womb; a stressed baby may pass it before birth and breathe it in.

A popular myth says a fetal heartbeat reveals what?

Whether it's a boy or girl can't be told this way: a study of 477 early scans found no significant heart-rate difference, and a 2023 review agreed.

What is the first, antibody-rich 'milk' a mother produces just after birth called?

Colostrum is so concentrated that a newborn needs only about a teaspoonful per feed, and its mild laxative effect helps the baby pass its first stools.

What is the pregnancy-linked craving for non-food substances such as chalk or soil called?

Pica takes its name from the Latin for magpie, a bird said to eat almost anything; because it can signal low nutrients, doctors may test a sufferer's iron levels.

Which term describes a fetus lying bottom-first rather than head-first near the end of pregnancy?

Breech babies sit bottom-down in the womb; about 3 to 4% of babies are breech at term, and many are delivered by caesarean section.

In an ectopic pregnancy, where does the embryo most often implant?

A fallopian tube is where more than 90% of ectopic pregnancies implant; a tube can't hold a growing embryo, so the pregnancy can't be saved and usually has to be removed.

What is a pregnancy that the mother doesn't know about until late on, or even until labour, called?

A cryptic pregnancy can hide when periods are irregular or symptoms are mistaken for something else; about 1 in 2,500 pregnancies goes unnoticed right up to delivery.

What is behind about half of all miscarriages?

A chromosome error usually arises by chance when an egg or sperm carries the wrong number of chromosomes; such errors grow more common as the mother ages.

In which trimester is the risk of miscarriage highest?

The first trimester sees about 8 in 10 miscarriages, and they are rarely down to anything the mother did: everyday exercise and sex don't cause them.

Which of these countries had the highest fertility rate in 2024?

Niger's women averaged about six children each in 2024, against roughly four and a half in Nigeria and Afghanistan and two in India, so nearly half of Niger's people are under 15.

Roughly how many pregnancies begin worldwide each year?

Around 200 million is the scale: researchers estimated 213 million pregnancies in 2012, far more than the babies born, because many pregnancies end in miscarriage or abortion.

Cerebral palsy is far more common among which group of newborns?

Cerebral palsy is several times more common in multiple births like twins and triplets, largely because they are far more often born prematurely and at low birth weight.

What name is given to the facial pigmentation sometimes called the 'mask of pregnancy'?

Melasma, also called chloasma or the 'mask of pregnancy', is a patchy brown pigmentation of the face triggered by pregnancy hormones and sunlight; it usually fades after delivery.

What made Iowa's McCaughey family famous in 1997?

The first septuplets known to survive infancy drew a flood of donations: a large house, a van, nanny services and the offer of free places at Iowa's state universities.

Which hormone drives the contractions of labour and is given synthetically to induce it?

Oxytocin works in a rare positive feedback loop: the baby pressing on the cervix triggers its release, contractions push the baby down harder, and more is released until the birth.

Which vaccine-preventable infection in early pregnancy classically causes deafness and heart defects in the baby?

Rubella, or German measles, was linked to birth defects in 1941 by Australian eye doctor Norman Gregg, who traced a wave of babies born with cataracts to mothers infected during an epidemic.

In pregnancy care, Naegele's rule is used to estimate what?

The baby's due date, by Naegele's rule, falls 40 weeks into the pregnancy, yet only about 1 in 25 babies actually arrives on the day itself.

Half-foreign to its mother, a fetus poses the same immune puzzle as which procedure?

An organ transplant from a half-matched donor would normally be rejected, yet the mother's body tolerates the fetus; Peter Medawar posed the puzzle in 1953 and later won a Nobel Prize for work on immune tolerance.

Which part of the body can pregnancy make permanently bigger?

The feet can lengthen for good: a University of Iowa study found that arches flattened during pregnancy, probably under extra weight and looser ligaments, and had not recovered months after the birth.

Which gas in cigarette smoke cuts the oxygen reaching an unborn baby?

Carbon monoxide latches onto the haemoglobin in red blood cells in place of oxygen, so less reaches the baby; that shortfall is one reason smokers' babies tend to be born smaller.

Pregnant women are told to avoid scuba diving because the baby has no protection against what?

Decompression sickness is a risk the baby has no protection against, so scuba diving is ruled out, whereas swimming is encouraged, since the water supports the extra weight.

Which term, from a word meaning 'to erase', describes the cervix thinning out before birth?

Effacement, scored in percent, is one of the cervical checks doctors use to judge whether inducing labour is likely to succeed.

Which WHO and UNICEF programme, launched in 1991, accredits maternity units that support breastfeeding?

Baby-Friendly Hospital Initiative status rests on ten steps, and step one is obeying the international code that curbs the marketing of formula milk, so accredited wards can't promote formula to new mothers.

A 2022 UN report found nearly half of the world's pregnancies were what?

Unintended pregnancies make up nearly half the total, the UN Population Fund reported, calling it a neglected crisis; roughly six in ten of them end in abortion.