{"id":279,"date":"2025-12-21T11:15:01","date_gmt":"2025-12-21T07:45:01","guid":{"rendered":"https:\/\/maryamaghaei.com\/en\/?p=279"},"modified":"2025-12-21T11:15:15","modified_gmt":"2025-12-21T07:45:15","slug":"fortieth-week-of-pregnancy","status":"publish","type":"post","link":"https:\/\/maryamaghaei.com\/en\/fortieth-week-of-pregnancy\/","title":{"rendered":"Fortieth Week of Pregnancy | Signs of Labor & What to Expect"},"content":{"rendered":"

The fortieth week of pregnancy<\/strong> is one of the most stressful weeks for many mothers. This is the time when anticipation for labor reaches its peak, yet labor pain may still not have begun<\/strong>. At this stage, your baby measures approximately 52 centimeters in length<\/strong> and has reached a weight close to birth \u2014 roughly the size of a small pumpkin<\/strong>.<\/p>\n

Despite the limited space in the uterus, fetal movements in the fortieth week of pregnancy should not stop or significantly decrease<\/strong>. A noticeable reduction in fetal movements at this stage can be an important warning sign and requires immediate evaluation by a specialist in obstetrics and gynecology<\/strong>.<\/p>\n

In this article, we comprehensively review how many months the fortieth week of pregnancy represents<\/strong>, the condition of the fetus at 40 weeks<\/strong>, what to do if labor pain has not started<\/strong>, and when further evaluation or labor induction may be necessary<\/strong>.<\/p>\n

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What Happens Inside the Fetus in the Fortieth Week of Pregnancy<\/strong><\/h2>\n

\"What<\/p>\n

By the fortieth week of pregnancy<\/strong>, the fetus is almost fully ready for birth<\/strong>. At this stage, the baby typically appears plump<\/strong>, with approximately 15% of body weight consisting of fat<\/strong>, which plays a crucial role in regulating body temperature after birth<\/strong>.
The average fetal weight at 40 weeks<\/strong> is approximately 3 to 3.5 kilograms<\/strong>, and the length is about 52 centimeters<\/strong>.<\/p>\n

Most of the fine body hair (lanugo<\/strong>) has disappeared by this time; however, the baby\u2019s skin remains covered with a natural protective layer. This white, greasy substance, known as vernix caseosa<\/strong>, protects the skin from amniotic fluid exposure and from contact with air after birth<\/strong>.<\/p>\n

During this week, the fetus produces bilirubin<\/strong>, a substance generated from the breakdown of red blood cells. During pregnancy, bilirubin is transferred through the placenta<\/strong> to the mother\u2019s body for elimination. After birth and clamping of the umbilical cord<\/strong>, the newborn must eliminate bilirubin independently. This process may take several days, and if bilirubin levels rise, the baby may develop neonatal jaundice<\/strong>.<\/p>\n

Neonatal jaundice is typically characterized by yellowing of the skin and the whites of the eyes<\/strong>. In most cases, it is not a cause for concern<\/strong> and can be effectively treated with phototherapy<\/strong>.<\/p>\n

At 40 weeks of pregnancy<\/strong>, the fetus has a well-developed ability to hear sounds<\/strong> and can recognize the mother\u2019s voice better than any other. From both a neurological and physical standpoint, the baby is fully prepared to meet you<\/strong>.<\/p>\n

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Babies Weighing More Than Four Kilograms in the Fortieth Week of Pregnancy<\/strong><\/h2>\n

\"Babies<\/p>\n

Infants weighing more than 4 kilograms<\/strong> are classified as macrosomic infants<\/strong> and may be at increased risk for certain health complications affecting both the mother and the baby. Delivery of a large baby may be associated with a higher risk of prolonged labor, labor arrest, shoulder dystocia, and neonatal hypoglycemia<\/strong>.<\/p>\n

Mothers who experience excessive weight gain during pregnancy<\/strong> or who have gestational diabetes<\/strong> are at greater risk of delivering a macrosomic infant. Nevertheless, many of these babies are born completely healthy<\/strong>, and in many cases, vaginal delivery is possible without complications<\/strong>.<\/p>\n

If an obstetrician suspects fetal macrosomia, ultrasound examination<\/strong> may be requested. Ultrasound estimates fetal weight by measuring the head circumference and diameter<\/strong>, which represent the largest part of the fetus. However, it is important to note that ultrasound provides only an estimate<\/strong>, and the only definitive way to determine fetal size is at birth<\/strong>.<\/p>\n

If neither the mother nor the fetus has a medical complication and the cervix is not yet ready for labor<\/strong>, physicians usually avoid unnecessary intervention<\/strong>. Many women of smaller stature are able to deliver large babies vaginally without difficulty, whereas some women with larger body frames may experience challenges even with smaller infants.<\/p>\n

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Your Body in the Fortieth Week of Pregnancy<\/strong><\/h2>\n

\"Your<\/p>\n

If labor has not yet begun during the fortieth week of pregnancy<\/strong>, it is completely normal to feel fatigued, restless, and frustrated<\/strong>. Many women repeatedly ask themselves:
\u201cIs there anything I can do to make labor start sooner?\u201d<\/em><\/p>\n

While your physician may prefer waiting a few more days, it is important to understand that most home remedies for inducing labor either lack proven effectiveness or work only under specific conditions<\/strong>.<\/p>\n

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Home Remedies for Starting Labor: Fact or Myth?<\/strong><\/h2>\n

\"Home<\/p>\n

Many commonly suggested methods among pregnant women are not scientifically supported<\/strong>. Although most are not dangerous, some may be uncomfortable or even harmful<\/strong>.<\/p>\n

For example, consuming spicy foods, chocolate, or caffeine<\/strong> with the belief that they trigger labor usually results only in indigestion, acid reflux, and ankle swelling<\/strong>, without playing a meaningful role in initiating labor.<\/p>\n

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Walking in the Fortieth Week of Pregnancy: Effective or Not?<\/strong><\/h2>\n

Many people believe that walking<\/strong> can initiate labor. Theoretically, gravity may help the baby descend and apply pressure on the cervix.<\/p>\n

However, in reality:<\/p>\n