Can Babies Survive Born at 5 Months of Pregnancy
Having a baby: Stages of pregnancy by trimester
For a pregnant person, feeling a new life developing within your body is an amazing experience, even though yous may not e'er feel your best during all the stages of pregnancy. One of the biggest changes for most meaning people is weight proceeds — a pregnant person carrying one baby should gain between xi and 40 lbs. (5 to 18 kilograms) by the end of the pregnancy, depending on pre-pregnancy weight, according to the Centers for Disease Control and Prevention.
Merely there are many other changes too, and exactly how pregnancy affects the trunk can exist very dissimilar from person to person, and even for the same mother from one pregnancy to the next. Some symptoms of pregnancy last for several weeks or months, while other discomforts are temporary or don't touch on everyone the aforementioned fashion.
"Pregnancy is a long, 10-month journey," said Dr. Draion Burch, an obstetrician and gynecologist at Magee Womens Hospital at the University of Pittsburgh Medical Center.
A normal pregnancy usually lasts about forty weeks, counting from the start twenty-four hour period of the last menstrual catamenia, which is effectually two weeks before conception really occurs. Pregnancy is divided into 3 trimesters, each lasting between 12 and 13 weeks. During each trimester, changes take identify in a pregnant person'southward body as well every bit in the developing fetus.
Some medical experts advise that mothers and doctors should also recognize a "fourth trimester," which is the 12-calendar week menstruation afterwards nativity in which babies are adjusting to life outside the womb and women are coping with motherhood and on-going changes in their bodies, according to a paper published in July 2017 in the American Periodical of Obstetrics and Gynecology.
Conception & implantation
Almost two weeks afterwards a period, ovulation occurs, during which the ovaries release typically one egg, just sometimes two or more eggs. The egg or eggs can be fertilized by a sperm jail cell 12 to 24 hours afterward release, every bit the egg travels downward the fallopian tube toward the uterus.
The sex of the fetus is determined at the time of fertilization, or formulation, and depends on whether the egg receives an X or Y chromosome from a sperm jail cell. If the egg receives an Ten chromosome, the baby will be a girl; a Y chromosome means the baby will be a boy.
Co-ordinate to the Cleveland Clinic, it takes nigh three to 4 days for the fertilized egg (or embryo) to move to the lining of the uterus, where it attaches or implants to the uterine wall. Once the embryo is implanted, the cells start to abound, eventually condign the fetus and the placenta, which is tissue that attaches to the lining of the uterus. The placenta transports oxygen, nutrients and hormones from the mother'south blood to the developing fetus via the umbilical cord throughout pregnancy.
First trimester, weeks ane-12
First trimester changes in the mother:
Significant people will experience a lot of symptoms during the outset trimester every bit the body adjusts to the hormonal changes of pregnancy. In the early weeks, the pregnancy may non exist showing much on the exterior of her body, only inside many changes are taking place.
Related: Am I pregnant? 12 early signs of pregnancy
One of the showtime changes is the production of human chorionic gonadotropin (hCG) hormone, which shows up in the blood right afterward conception occurs. Levels of hCG can be detected in a significant person's urine about a calendar week after a missed period. Human chorionic gonadotropin is what'due south detected in a positive home pregnancy test.
Ascent levels of hCG and other hormones, such equally estrogen, may be responsible for the waves of nausea and vomiting known as morning time sickness that's about common during the first few months of pregnancy. Despite its name, morning sickness can occur whatever fourth dimension of twenty-four hour period.
A pregnant person may as well feel more tired than usual during the outset trimester, a symptom that's linked with ascent levels of the hormone progesterone, which increases sleepiness.
Early in pregnancy, breasts may feel more tender and swollen, another side effect of rising levels of pregnancy hormones. The areolas, the peel effectually each nipple, will darken and enlarge.
A pregnant person'southward digestive system may tedious down to increase the assimilation of beneficial nutrients. Only reduced mobility of the digestive arrangement might also trigger such common complaints as heartburn, constipation, bloating and gas, co-ordinate to the Office on Women'due south Health (OWH).
Many parts of the body will work harder during pregnancy, including the eye. Center rate volition increment to pump more blood to the uterus, which will supply information technology to the fetus.
Besides the concrete changes, expecting mothers may also experience emotional highs and lows in the early on months of her pregnancy and throughout information technology. These emotions may range from weepiness, mood swings and forgetfulness, to fear, anxiety and excitement.
Related: Mood swings & mommy brain: The emotional challenges of pregnancy
First trimester embryo development:
A developing baby is called an embryo from the moment formulation takes place until the 8th week of pregnancy.
During the first calendar month of pregnancy the center and lungs begin to develop, and the arms, legs, brain, spinal cord and nerves begin to form, co-ordinate to the American College of Obstetricians and Gynecologists (ACOG).
The embryo will be about the size of a pea around ane month into a pregnancy, Burch said. Around the second calendar month of pregnancy, the embryo has grown to the size of a kidney edible bean. In improver, the ankles, wrists, fingers and eyelids course, bones appear, and the genitals and inner ear begin to develop.
Later the eighth week of pregnancy and until birth occurs, a developing baby is chosen a fetus.
By the stop of the 2nd month, nigh of the fetus' main organs will have formed, Burch said. At this stage of pregnancy, he stressed, it's extremely important that pregnant women practice non take harmful medications, such as illegal drugs. The starting time trimester is also the period when nearly miscarriages and nativity defects occur. Betwixt x% and 20% of known pregnancies end in miscarriages, mostly because the fetus is non developing unremarkably, co-ordinate to the Mayo Clinic. Studies have institute the chance of miscarriage drops significantly afterwards the 12th week of pregnancy.
As early on equally the 10th calendar week of pregnancy, a pregnant person may opt to have a noninvasive prenatal examination (NIPT). This testing uses a blood sample from the female parent to analyze DNA from the fetus to help determine the hazard of the baby existence born with certain genetic abnormalities, according to MedlinePlus. The mother tin also find out the sex of the baby at this time, as well through providing a blood sample that analyzes fetal Deoxyribonucleic acid. None of these tests come in contact with or crusade any harm to the fetus.
During the 3rd month of pregnancy, the fetus' basic and muscles begin to grow, buds for hereafter teeth appear, and fingers and toes abound. The intestines brainstorm to course and the skin is almost transparent.
2nd trimester, weeks 13-27
Second trimester changes in the mother:
By the second trimester, some of the unpleasant effects of early pregnancy may lessen or disappear every bit the body adjusts to its irresolute hormone levels. Sleeping may get easier and energy levels may increment.
Nausea and vomiting commonly get ameliorate and go away, Burch told Alive Science. But other symptoms may crop up every bit the fetus continues its growth and evolution.
Pregnant people will start to feel more pelvic pressure, Burch said, adding that the pelvis feels heavy like something is weighing it down.
A more visible infant bump appears as the uterus grows beyond the pelvis, and the skin over the expanding belly may crawling as it stretches, co-ordinate to the OWH.
As the fetus is getting bigger and the mother is gaining more pregnancy weight in the forepart of her trunk, she may also experience more dorsum hurting, Burch said. A 2020 written report published in the Journal of Personalized Medicine plant that while well-nigh pregnant people experienced back pain, it was worse in those who were non physically active.
Sometime between the 16th and 18th weeks of pregnancy, a beginning-time female parent may feel the first fluttering movements of the fetus, known as quickening, Burch said. Information technology it isn't the first pregnancy, the mother is likely to experience the fetus kicking, squirming or turning fifty-fifty sooner because she knows what to expect, he said.
The 20th week usually marks the halfway indicate of pregnancy. From about 20 weeks, information technology is possible to develop preeclampsia, a condition characterized by loftier-blood pressure level, according to the Mayo Dispensary. If left untreated, the condition can pb to serious, even fatal, complications for mother and infant. Other symptoms include rapid weight gain and swelling.
Burch encourages his patients to accept a "baby-moon" — a mini-vacation or weekend getaway — during the second trimester, and he said the all-time time to get abroad is effectually the 28th week of pregnancy. Expecting mothers are generally feeling pretty practiced at this signal, and there's a lower risk of miscarriage and premature labor. A written report published in 2020 in the journal PLOS One, found that for hundreds of thousands of babies, their mother's airplane travel had no adverse effects on the baby's birth weight or gestational age. However, some health professionals and airlines may discourage plane travel after the 36th week because at that time birth could be just around the corner.
Second trimester fetal evolution:
In the 2nd trimester, the fetus will be betwixt 3 and five inches (7 and 12 centimeters) long, Burch said. Sometime between 18 and 22 weeks, an ultrasound may reveal the sexual activity of the infant, if parents want to know this information in accelerate.
Related: Am I having a male child or girl? Ultrasound and sex prediction
By the fourth month of pregnancy the fetus' eyebrows, eyelashes, fingernails and the cervix class, and the skin has a wrinkled appearance. In add-on, during the fourth month the arms and legs can bend, the kidneys start working and can produce urine, and the fetus tin can swallow and hear, according to the ACOG.
In the fifth month of pregnancy, the fetus is more agile and the mother may be able to feel its movements. The fetus besides sleeps and wakes on regular cycles. A fine hair (called lanugo) and a waxy coating (called vernix) cover and protect the thin fetal peel.
Past the sixth month of pregnancy, pilus begins to grow, the optics begin to open and the brain is chop-chop developing. Although the lungs are completely formed, they don't yet role.
Third trimester, weeks 28-40
Third trimester changes in the female parent:
During the 3rd trimester, equally the female parent's enlarged uterus pushes against her diaphragm, a major muscle involved in animate. Because of this, she may feel short of breath because the lungs accept less room to expand, according to Johns Hopkins Medicine. A pregnant person's ankles, easily, feet and face may peachy due to fluid retention and slower blood circulation.
A female parent-to-be will need to urinate more frequently because of the pressure on her float. She may too have more backaches and more than hurting in the hips and pelvis, as these joints expand in grooming for delivery. Changes in body shape can also make a significant person more unstable on their feet and more likely to fall, according to a 2006 study published in the American Journal of Obstetrics and Gynecology.
Her face may develop dark patches of skin, and stretch marks may appear on her belly, thighs, breasts and behind. She may also notice varicose veins on her legs.
In the 3rd trimester, the breasts may start to leak colostrum, a yellow liquid, equally they get ready for breastfeeding, according to the OWH. The infant will get-go to drib lower in the female parent's belly.
Fake labor, known as Braxton-Hicks contractions, may begin to occur as the due date gets closer. A "nesting instinct," beliefs exhibited in many mammals, may kick in every bit expecting parents work on baby-proofing their dwelling house, store for infant items, prepare the nursery and await their new inflow.
Related: Signs of labor: 6 clues baby is coming soon
During the last weeks of pregnancy, it will become harder to find a comfortable sleeping position, adding to the increased levels of fatigue, Burch said.
Tertiary trimester fetal evolution:
By the seventh month of pregnancy, the fetus kicks and stretches, and can even reply to light and audio, Burch said. Its eyes tin also open and shut.
During the eighth and ninth months of pregnancy, the fetus gains weight very rapidly. Bones harden, but the skull remains soft and flexible so the head can fit through the nascence canal. Different regions of the brain are forming, and the fetus is able to hiccup, co-ordinate to ACOG.
The 9th calendar month is the home stretch of pregnancy, and the fetus is getting ready for nascence by turning into a head-downwardly position in the mother'due south pelvis. The lungs are at present fully mature and ready to function on their own.
The definition of a total-term pregnancy is when a babe is born afterward 39 to 40 weeks (it used to exist 37 weeks), Burch said. This is because babies built-in at total-term had lower risks of problems with breathing, feeding and regulating their temperature than those built-in earlier, according to the National Institutes of Health.
Quaternary trimester, post-birth
The period called the "fourth trimester" begins as soon as birth is over. While this can be a joyful and heady time for nigh new parents, it tin can as well be extremely challenging and stressful.
In the weeks and months after the infant is born, the mother's body continues to go through major changes equally it heals and recovers from pregnancy and birth. At the aforementioned time, the mother must grapple with the physical and emotional challenges of feeding and caring for a newborn, Dr. Ilona T. Goldfarb, a maternal health specialist, wrote for the Harvard Health Weblog. "Women and their families experience substantial physiological, social and emotional changes," during this time, Goldfarb wrote.
Despite the continuing changes and challenges that occur after childbirth, most mothers visit their obstetrician only once in the weeks later on birth. Many health experts agree that this lack of attention to maternal health in the 4th trimester is apropos, especially considering that more half of pregnancy-related deaths occur after the birth of the child, according to a 2018 report from the ACOG.
Fortunately, several of these experts are putting force per unit area on the healthcare community to provide more comprehensive postpartum intendance. Goldfarb recommends pregnant people come up upward with a postpartum plan to help conceptualize difficulties and how to bargain with them as they pop up. She also recommends mothers speak with their obstetrician to learn more about the kind of postpartum resources they take.
Additional resource
- Mayo Clinic: Pregnancy Week past Week
- Role on Women's Health: Stages of Pregnancy
- American College of Obstetricians and Gynecologists: Postpartum Depression FAQs
This article is for advisory purposes simply, and is non meant to offer medical advice. This article was updated on June fourteen, 2021 past Live Science contributor Sarah Wild.
Source: https://www.livescience.com/44899-stages-of-pregnancy.html
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