The uterus is the cradle of the fetus. During the entire pregnancy, as the baby grows up, the uterus has also changed dramatically.Doraemon will explain in detail the process of changing the uterus after giving birth to the postpartum uterine in detail today.
1. The shape of the uterus when not pregnant
The uterus is located in the middle of the pelvic cavity, between the bladder and the rectum.Normal adult unwelling women’s uterus is forward -to -forward. The fixed device of the uterus is mainly the support of pelvic and vagina and the traction fixing of the ligament.The four pairs of ligaments are wide ligaments, uterine round ligaments, the main ligaments of the uterus, and the citrus ligament.
The size of the uterus is related to age and fertility. The unprecedented friends are about 7.5cm long, 5cm wide, and 3cm thick. The uterus can be divided into three parts: bottom, body and neck.The uterine cavity is inverted triangle, about 6cm deep, and the two corners are "uterine horns", which leads to the fallopian tube.The lower end is "Gorge", about 1cm long.The gorge has gradually expanded during pregnancy, and the subordinate section of the uterus is formed when giving birth.
The proportion of cervical and cervix varies from age. The infant period is 1: 2, the adolescent period is 1: 1, and the birth period is 2: 1.The uterus is slightly bent forward slightly, and the front wall is lying on the bladder. It is almost a right angle from the vagina. The position can be changed with different degrees of filling the bladder rectum.The uterine wall is three layers: pulp, muscle layer and mucous membrane (that is, endometrial) from the outside.
2. The amazing changes in the uterus during pregnancy
1. Early pregnancy: No change in the uterus yet
In the early pregnancy, the stomach of the prospective mummy was almost invisible, which means that the changes in the uterus during this period are not obvious.During this period, the expectant mother’s uterus actually looked like a grapefruit, and slowly enriched the entire abdominal cavity. Do you also start to feel very magical?
4 weeks of pregnancy
At the first one month of pregnancy, the size and shape of the expectant mother’s uterus and shape were basically not particularly changed compared with before pregnancy.But the uterine wall began to become soft and thickened, and it looked like the size of the eggs.At this time, hormone secretion in the expectant mother’s body was unbalanced, and the more sensitive expectant mothers also had early pregnancy symptoms such as nausea and vomiting. Some expectant mums would also be fatigue, fever, chills, etc.
8 weeks of pregnancy
With the increase of the gestational week, the uterine wall of expectant mothers gradually softened, and the cervix became thicker to protect the uterus.Generally, the first birth examination is required at 8 weeks to 12 weeks of pregnancy. The project usually includes consultation, measurement of weight and blood pressure, listening to fetal hearts, urine tests, blood tests, and examination of uterine size.
12 weeks of pregnancy
At 3 months of pregnancy, the expectant mother’s uterus looks like a grapefruit. The uterus grows gradually with the fetus. The bottom of the palace can be touched on the pubic bone combination.With rectal, the bladder capacity is reduced, frequent urination occurs, and there is always a feeling of irritable urination.
2. In the middle of pregnancy: increased the internal organs in the uterus
16 weeks of pregnancy
When entering the fourth month of pregnancy, the fetal growth rate accelerated, the uterus began to grow up and grow pelvis, and the ligament around the uterus changed from the original relaxation state to a tense state.It will feel a little abdominal pain, showing pain, pain and falling, but generally does not pose a threat to pregnancy.
20 weeks of pregnancy
At 5 months of pregnancy, the uterus of expectant mothers gradually increased, squeezing the abdomen outwards, causing the belly to swell out. The expectant mother can easily touch her uterus at about 1.8 cm below the belly button.At 6 months of pregnancy, the uterus is now about 8 cm above the navel.At this time, the uterus increases quickly and squeeze the internal organs quickly, so almost all expectant mothers will face symptoms such as dull chest and difficulty breathing. Therefore, expectant mothers start to choose a sideways sleeping posture.
28 weeks of pregnancy
By the seventh month, the abdomen of the expectant mother was obvious, and the bottom of the palace continued to rise. The height of the uterus was 24-26 cm. In order to keep the balance slightly backwards, the body was painful and painful.During this period, the weight of expectant mothers increased rapidly and increased by 500 grams per week. At the same time, the increased uterus increased pelvic compression, which increased the degree of obstruction of the lower body veins. If it is not noticed, hemorrhoids may occur.
3. Late pregnancy: the abdomen is hardened, and the uterus begins to shrink
After the third trimester, the uterus has increased rapidly, and the abdomen bulges every day. Gently touching the uterus can often feel that the abdomen feels hardened.
32 weeks of pregnancy
By 8 months, most pregnant mothers will have symptoms of contractions in the late pregnancy (such as tight belly).At the same time, due to the needs of childbirth and postpartum breastfeeding, expectant mothers’ breasts began to secrete their colostrum, and the lower abdomen became more and more tight.In the next few weeks, the intensity of contractions in the third trimester will become larger and larger. You also find that more traces of pulling will appear on your breasts, abdomen, buttocks, and thighs.
36 weeks of pregnancy
At 9 months of pregnancy, the uterus has almost occupied the entire abdominal cavity, directly compressing the stomach, diaphragm, heart, etc., causing palpitations, shortness of breath, bloating, and poor appetite. The number of urination times has also increased.
38 weeks of pregnancy
In the last month, expectant mothers will have a feeling of moving downwards.This is because at this time, the head of the fetus has entered the entrance to the pelvic cavity. By the time of the full moon, accompanied by abdominal pain, the uterine contraction began to occur and the mature baby baby gave birth smoothly.
3. What will happen to the uterus during childbirth?
During childbirth, the uterine muscles gradually stretched the cervix, and then the uterine muscle contraction pushed the fetus to the vagina and the child was born.From closed to 10 cm, it takes a long time to take a long time, and the first maternal is about 8 to 14 hours; the maternal is about 6 to 8 hours.
Cervical opening pain frequency
Contract every 0 to 3 cm and 5 minutes, about 30 to 60 seconds each time.
Three to 7 cm 2 to 4 minutes contract every 45-60 seconds at a time.
Contract every 7 to 10 cm and 1 minute, about 30 to 90 seconds at a time.
Fourth, postpartum uterus changes
The most changes during puerperium are the uterus. Old uterine recovery is an important symbol of the recovery of postpartum mothers.The old uterine recovery is mainly reflected in the shrinkage of the uterine muscle fiber, smaller uterine and endometrial regeneration.
On the first day after childbirth, the bottom of the uterus is 1 to 2 horizontal fingers below the umbilicus, and the uterus weighs about 100 grams.One to 2 days after giving birth, a small ball -shaped small bag will be up in the lower abdomen, and it hurts. This is the physiological phenomenon in the recovery process of the uterus.The uterus usually shrinks into the pelvic cavity around 10 to 14 days, and the uterus cannot be touched from the lower abdomen.At 6 weeks after giving birth, the uterus can return to normal size.The reason why the uterus has changed is because the severe contraction of the uterine muscle has caused the blood vessel atres or stenosis of the uterine wall, causing local anemia, and the cytoplasm of muscle fiber is self -dissolved.
After childbirth, the cervix relaxation, congestion and edema, purple, thin cervical wall, wrinkled like cuffs, 1 cm thick, 3 to 6 cm long.It quickly shortens, harden, and return to normal shape within 18 hours.On the 3rd day of the cervix outer mouth, 2 fingers, 1 finger on the 12th, closed inner mouth.The cervix recovers normal size 4 weeks after delivery.Due to the damage during childbirth, the outer mouth of the first maternal cervix changed from the original circular to a horizontal crack, forming the cervical front and rear lips.
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