Pregnancy and childbirth
Performed by:Bakytzhanova Zh
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Pregnancy, or gestation, is a period of approximately 9 months when a woman carries an embryo or fetus in her uterus.
There are three stages of pregnancy are known as trimesters. Each one lasts approximately 3 months.
When do the symptoms start?
Though it may sound odd, first week of pregnancy is based on the date of woman’s last menstrual period. The last menstrual period is considered the first week of pregnancy, even if a woman wasn’t actually pregnant yet. The expected delivery date is calculated using the first day of last period. For that reason, the first few weeks where the woman may not have symptoms also count toward the 40-week pregnancy.
When the woman is ready to have a baby, she'll go through labor. Labor is the process of giving birth. Signs that future mother might be going into labor include
Contractions that are regular then start to come closer together
Leaking fluid or bleeding from the vagina
Low, dull backache
Stages of labor
Labor happens in three stages.
The first stage begins with contractions. It continues until the cervix has become thinner and dilated (stretched) to about 4 inches wide.
The second stage is the active stage, in which woman begins to push downward. Crowning is when the baby's scalp comes into view. Shortly afterward, the baby is born.
In the third stage, mother delivers the placenta. The placenta is the organ that supplied food and oxygen to the baby during pregnancy.