First, a woman must first have sex with a man she likes.
Second, during sexual intercourse, the male penis will shoot sperm and enter the female uterus to combine with the eggs discharged by the female. The process is as follows: sperm entering the reproductive tract is an unstoppable process. In the process of sperm travel, there will be various obstacles to eliminate those poor quality sperm. The human body cleverly designed the mechanism of survival of the fittest, eliminated the weak sperm, and the best sperm left would have the opportunity to combine with the egg.
As a result, the liquefied sperm swam in the reproductive tract, entered the cervical canal and waited for the eggs in the uterine cavity. At this time, the number may be only a few hundred. It is generally believed that when this part enters the female safety zone, the latent sperm can survive for about three to four days, while the egg survival time is relatively short. A mature egg is produced in the ovary and is picked up through the fallopian tube, which is like a hand, pushing the egg back to the ampulla of the fallopian tube and waiting for fertilization.
It is generally believed that the time from ovulation to fertilization is 8 to 24 hours. Sperm lives longer in female reproductive tract than eggs, which gives us a hint. In the past, people misunderstood that after the egg was discharged, a huge sperm team besieged the egg through sexual life for fertilization. In fact, the sperm is moving forward, waiting for the egg, waiting for the opportunity, and finally the luckiest and most energetic sperm can combine with the egg. This process is also a moment.
Eggs are protected by membranes from external influences. Sperm has the function of acrosome. Like a missile, it can get into an egg. After the head and neck go in, the tail stays outside. Once the egg is fertilized, the outer envelope changes and forms a hard shell, which other sperm cannot enter.
So most human fertilized eggs are one, that is, singleton pregnancy. There are some very accidental factors, or special circumstances, just two sperm enter the egg synchronously, and twins are formed. After fertilization, the egg slowly moves from the fallopian tube to the uterus, is planted, and begins to get pregnant.
Third, the process of female pregnancy is as follows:
The mother's body shape in the first month of pregnancy has not changed much compared with before. At this time, the baby is just a smiling germ, just camping in the mother's stomach. At this point, the mother's breasts will become a little hard, the nipple color will become a little dark, and there will be symptoms such as morning sickness and drowsiness.
Mothers in the second month of pregnancy are prone to miscarriage. At this time, they need to avoid strenuous exercise and sex life, and quit smoking and drinking. At this time, the organs of the fetus have obvious characteristics, the fetus can already see the outline of the head, and the brain is developing rapidly.
Mothers in the third month of pregnancy need to have a prenatal systematic examination and establish a pregnancy insurance card. Mother's uterus has become as big as a fist, with frequent urination and unclean urine.
When the mother in the fourth month of pregnancy enters the second trimester, the morning sickness will be relieved a lot, and the mother can also have a good appetite to eat. At this time, the baby can do all kinds of activities in the mother's stomach, and even somersault. At this time, the baby's sex can be checked by B-ultrasound.
The mother in the fifth month of pregnancy, at this time, the expectant mother has entered the most comfortable period of pregnancy, and both the fetus and the expectant mother have become very stable. Babies can even hear the sounds around them. At this time, the baby will become more sensitive to the reaction of the outside world, and the mother's weight will also increase, at least 2KG.
The mother of the sixth month of pregnancy, at this time, the expectant mother's abdomen began to bulge, and the waist became thicker. The baby's hair, eyebrows and bones can be seen clearly, but his body is still wrinkled. The baby's fingernails and toenails also begin to grow at this time.
The mother of the seventh month of pregnancy, at this time, the expectant mother has entered the third trimester, and her mother's movements become clumsy, afraid of light, and her body will feel weak, sore and even constipated. The baby's movements are getting bigger and bigger, and he is ready to come out to see the world at any time.
When the mother is pregnant for the eighth month, the expectant mother becomes more clumsy. She will have a check-up every two weeks to speed up the growth and development of the fetus and minimize outdoor exercise.
When the mother is pregnant to the ninth month, the organs of the fetus have developed, and the expectant mother will become nervous, excited and anxious. At this time, mothers should patiently do early education, appease and eat healthily.
The mother who has been pregnant for ten months has entered the final stage. The expectant parents are ready to welcome the birth of the baby, have a good rest, pay close attention to the physical changes and prepare for labor.
Fourth, before a woman gives birth:
Signs of childbirth? ?
Pain? ?
You can feel the uterus contracting regularly and expanding more than 6 times in one day, indicating that the labor pains have begun. Pregnant women who give birth for the first time have pains every 10 minutes, or pregnant women with production experience have pains every 15-20 minutes, that is, they should be admitted to hospital for labor. Pain can be divided into real pain and fake pain, and the differences are as follows:
False pain
Irregularities begin to appear 3-4 weeks before delivery, because walking will improve the feeling of pain. Pain only occurs in the lower abdomen and groin, and the cervix rarely extends to the back without dilatation.
It really hurts? ? At the beginning of labor, there is a strong feeling of regular pain, which can not be improved by walking. Due to uterine contraction, the cervix gradually expands in the abdomen, back and coccyx.
See the red? ? Because the mucus plug at the cervix falls off, the microvessels rupture, and a small amount of pink or red viscous secretions mixed with a small amount of blood appear, which usually begins to appear 1-2 days before delivery. ?
? Breaking water to wrap fetal egg membrane leads to amniotic fluid outflow, which is called breaking water, slightly sticky and colorless, similar to urine. Generally, water is broken before it hurts, but there are also cases where water is broken without pain. Try to lie flat when breaking water and seek medical attention as soon as possible. Please be admitted to the hospital immediately for labor. ?
A sense of relaxation? ? When the first pregnant woman is 36-37 weeks old, the fetal head descends into the pelvic cavity, making the uterus lower, breathing smoother, the stomach less prone to flatulence and feeling lighter. Pregnant women with more than two children need to pass the expected date of delivery before they feel light, and even the fetal head drops after the onset of labor pains.
Five, the female production process:
The first stage of labor: a long prelude
Time span: 8 ~ 12 hours before delivery (primipara)
Although it is the whole process of natural delivery from the regular contraction of uterus to the delivery of placenta, the first stage of labor is a long prelude to the real delivery.
The first stage of labor means that the cervix begins to expand until it is completely opened (about 10 cm). This is the longest stage of labor. At this time, the contraction interval of the uterus will become shorter and shorter, every 5 ~ 6 times from the beginning.
More than 30 seconds per minute to 50 seconds every 2-3 minutes. In the first stage of labor, expectant mothers will feel pain in their lower abdomen during contractions. The tighter the contraction, the shorter the interval, and the faster the cervical opening. At this stage, expectant mothers must keep quiet and don't waste their energy by shouting, so as to avoid being exhausted and unable to cooperate in the future.
Stage 1: initial delivery (lasting for more than 20 hours)
In the early stage of labor, the interval between contractions of expectant mothers is long and slight, with an interval of 20-30 minutes, and the duration of each contraction generally does not exceed 1 minute. By the end of the first stage, the contraction interval is generally 5.
After a few minutes, the cervix dilated to 3 cm.
I suggest you spend this stage at home. You can take a walk or take a hot bath (if the water doesn't break) to relax yourself. You can also sleep at home and store enough energy.
When the normal contraction interval becomes 5 minutes, you can take the bag to the hospital.
The second stage: active period (lasting about 4-6 hours) During the active period of labor, contractions become regular and more intense, with a general time interval of 2-5 minutes; The duration of uterine contraction is also relatively long, lasting nearly 1 min. During this period, your cervix expanded from 4 cm to 8 cm. During this period, expectant mothers will feel very painful, may sweat and feel tired. If your amniotic membrane is not ruptured at this time, your doctor or midwife will puncture it so that the delivery can proceed smoothly.
You can decide whether painless delivery is needed.
If you ask a guide to accompany you, she will help you and make your delivery smoother.
When the pain of uterine contraction is unbearable, some methods can be taken to relieve the pain, such as breathing to relieve the pain or asking family members to help massage to relieve the pain.
The third stage: transition period (no more than 1 hour)
In the whole delivery process, the transition period is the most challenging. During this period, your cervix will expand from 8 cm to 10 cm, and the contraction interval will be 2 ~ 3 minutes. Each contraction lasts 1.5 minutes.
Contraction is the most painful at this time, and you may feel sick, your legs tremble, burp or be very sensitive to other people's touch. You may feel tired and anxious, but at the same time, you should realize that these are all good phenomena, because your cervix is about to expand completely.
You shouldn't push hard at this time. Exerting force before the cervix is completely dilated can cause the cervix to tear or swell.
Try to cooperate with the doctor's instructions.
The second stage of labor: you need to exert yourself.
Time span: about 1 ~ 2 hours.
Once your cervix is fully opened, you enter the stage of fetal delivery.
The baby is finally leaving your body. The second stage of labor refers to the stage from the uterus opening to the delivery of the baby.
At this time, with the strengthening of uterine contraction, the uterine orifice is completely opened and the fetal head begins to descend to the pelvis. With the progress of labor, the uterine contraction strengthens, forcing the baby to be delivered from the mother.
The contraction in the second stage of labor is stronger, and the expectant mother begins to feel defecation.
Due to frequent contractions and the increase of abdominal pressure, the productivity is greatly improved. Your strength will help the fetus leave the uterus and pass through the birth canal and pelvic floor muscles smoothly.
At this time, the contractions began to be less intense and the frequency began to slow down.
When the fetal head begins to appear and is ready to pass through the pelvic floor muscles,
Your doctor or midwife needs to decide whether to perform a vulvar incision. This is a small incision, but it can enlarge the vaginal opening and make the fetus deliver smoothly.
You won't feel any pain when performing vulvotomy, because the pressure of fetal head provides a natural anesthesia; If you have not received epidural anesthesia before, you can also ask for local anesthesia at this time.
Expectant mothers should not feel uneasy because of the feeling of defecation, and should not feel embarrassed because of bad posture, as long as they try to cooperate with the doctor.
Try to use the upper body upright posture, so that the fetus can be delivered smoothly with the help of gravity.
If you use epidural anesthesia, you can't feel the process and need to cooperate with the doctor's guidance.
The third stage of labor: delivery of placenta.
Time span: about 5 ~ 15 minutes.
The third stage of labor refers to the stage from the birth of the baby to the discharge of the placenta from the vagina. At this point, the baby has given birth.
The uterine contraction will stop for a while and then start again. The placenta will peel off from the uterine wall and move to the cervix due to the uterine contraction, and the expectant mother will exert her strength again.
The placenta will come out smoothly. The doctor or midwife will check the placenta and diaphragm to make sure they are all discharged.
Any debris left in the uterus should be removed. The doctor or midwife will also check your uterus to make sure it continues to contract.
Only in this way can the bleeding at the placenta fall off be stopped. If you have had a vulvotomy, you need to suture the wound at this time.