Discover Interesting Things In 40 Weeks Of Pregnancy (Part 3)

The uterus in pregnancy increases 500-1,000 times as large as normal. Fetuses can feel smells in 32^nd week.

In the 3^rd term of pregnancy, though you can feel more tired and the body is heavier, you and your fetuses have been through 2 thirds of the path. Soon you family will be glad to welcome a new dear member. In the remained one thirds, there’re changes that cause discomfort to pregnant women. However, the surprising changes on pregnant women’s bodies will create good conditions for the marvelous developments of fetuses, to complete their organs and prepare for the adjustment to the new environment outside the womb.

Changes in pregnant women’s bodies

5kg is the general weight that you will gain during the last 3 months in which there’re 4kg for fetal developments; the rest is for the developments of sub-sections like the placentas, amniotic fluid, the increase of blood and water for the developments of uteruses and breasts. At the same time, the level of fats in pregnant women keeps on increasing along fetal growths.   

You will find it hard to walk in the last months of pregnancy because the strained and weakened ligaments.

Pregnant women’s breathing capacity increase from 3 pins/minute to 5 pins/minute (40% higher than normal). It’s due to the decrease of movements of diaphragms by the time fetuses get bigger in the womb, making pregnant women have to take deep breath in order to have enough oxygen.

The need of oxygen of pregnant women and fetuses will increase 20% as high as usual.

The breast starts secreting young milk from the 30^th week of pregnancy. This is considered to be first foods of infants after birth.

Your belly button will get protruding, because the fast growths of fetuses, making the abdomen overwhelmingly increased, which goes with the Linea Nigra, making your bump looked bigger.

The uterus start having contractions from the 30^th week as it practices for the labor. The contractions are called Braxton Hicks contractions lasting for about 30 seconds; you hardly recognize them.

Your vision will be weakened, different from normal and the focus is also changed making you easy to stumble and drop stuffs. The reason is the gravity balancing at the front of the belly making your body tend to lean backward, so does your head.

You are always nervous, worried and hurry to finish things. This is called the nestling instinct which often occurs during the time before the labor.

In the 40^th week, your uterus increases 500-1000 times as big as normal.

The marvelous developments of fetuses

Do you know anything about drinks that your fetuses are used to drinking during the time in the womb? That is amniotic fluid. Your fetuses will excrete half a liter of the urine a day into the amniotic fluid. The whole amount of the amniotic fluid is continuously regenerated and expropriated every 3 hour. Therefore, pregnant women should maintain drinking lots of water to keep the amniotic fluid stable. 

Fetuses swallow the amniotic fluid and discharge half of a liter of the urine a day into the amniotic.

In 28^th week, fetal eyelids start opening, looking and focusing. However, their vision is limited from 20-25 cm, which seems to be related to the fact that they’re in the womb.

From 28^th to 32^nd weeks, fetuses increase about 500g a week, for which you suddenly look bigger and find your prenatal clothes tight. The amniotic fluid is always at 37 degree Celsius, a little bit warmer than pregnant women’s body, making fetuses warm during the time the fats are forming in their bodies.

In 30^th week, fetal neural systems rapidly develop; brains get bigger, start having folding and corrugating like pecans. They start having the ability to acknowledge and conduct complex actions. The fetuses also get bigger. The fair, eyebrows, eyelashes are grown. To male fetuses, testicles will go to inguinal areas then to the scrotum. They start controlling their temperature. Some fetuses who develop rapidly can turn their head around from the week goes in order to prepare for the early labor. Pregnant women who have off-springs are often been through the situation.

From the 32^nd to 35^th weeks, the ability to sense smells has developed since they came to the 32^nd week. And the fetuses increase 250g each week since then. Brain also develops very fast with the head penumbra increasing 2.5 cm a week. Fetal weight will increase to 2.46kg in the 35^th week. Pregnant women can be sure that the labor happening in the 35^th week has the chance of surviving increased to 99%.

In the 36^th week, most of fetuses have moved to the pelvic area; there’re only 2.5% fetuses having their head above the pelvis.

In the 37^th week, fetuses are totally grown up and ready for anticipating to the animated world.

In 40^th week – the last stage of pregnancy, fetuses will have the size of big dishes, about 20-25cm length, 2-3cm turbidity and about 650g weight. The placenta secrete hormones making the breast get strained and bigger by milk; making male and female fetuses bloat up and deflated after birth. To female fetuses, the end of secreting the hormones can lead to a light bleeding in the vagina, which will automatically recover after a few days.

At the end of the stage, the testicles of male fetuses start moving under while the ovaries of female fetuses are still above the edge of the pelvis; they will move to the official location after birth. At the time, there’ll be 95% fetuses having anterior positions, 4% having breech position and 1% have posterior position. Pregnant women should know that the due date is just conjectural because there’re only 5% infants given birth exactly at the expecting day.