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Estimated Birth Date Self-calculation Last menstrual day + 280 days The average period from fertilization to childbirth is 266 days. The first moment of pregnancy should be viewed as the date when the egg and sperm meet and fertilize or implant, but since it is not known exactly, it is assumed that fertilization takes place two weeks after the start of menstruation and 280 days after the start of the last period. Calculate the due date. 14 days from the last menstruation start to ovulation, 14 days from the ovulation to the next menstruation cycle is calculated based on the 28-day menstrual cycle. If the menstrual cycle is 25 days, 277 days after 28 days minus 3 days, the person with a 35-day menstruation period is 287 days plus 7 days will be his due date. However, even if you are pregnant normally, the delayed birth without analgesia is 10% of the total pregnancy by two weeks after the scheduled date. Negel formula If you cannot subtract or subtract 3 from your last menstrua

How to check pregnancy Pregnancy Diagnostic Reagent Test When pregnant, hormonal hormones are released into the urine of chorionic gonadotropin (hCG), which is a way to find out if you are pregnant using a specific antibody that binds to this hormone. Because it is so small, it is most accurate to test it in the first urine in the morning, when a relatively large amount is accumulated. Inspection is possible within 7-9 days after correction, with accuracy of 95% or more. However, ectopic pregnancy may not appear to be pregnant. Urine test If you go to the hospital for the first time, the first four weeks after the revision is 100% accurate. Examination after 2 weeks of fertilization can yield 90% accurate results. Blood test This test is done in a hospital and is more accurate than a urine test. Pregnancy is confirmed by the presence of chorionic gonadotropin in the blood.

A sign of pregnancy In addition to stopping menstruation during pregnancy, various symptoms occur. In particular, check for signs of pregnancy that may help women with irregular periods. Pregnancy Signs Menstruation is delayed more than a week. If your menstrual cycle is regular, you may suspect pregnancy if your menstrual date is more than a week later. This is because sperm and eggs meet and fertilize, and when embryonic cells are implanted on the uterine wall, menstruation stops. However, because of stress, mental shock, endocrine dysfunction, uterine dysfunction or ovarian dysfunction, menstruation may stop even when pregnancy, so check for other signs of pregnancy. Body temperature is high and chilly. Your body temperature is higher than usual and sometimes your body is cold as if you have a cold. If you are pregnant, even if your due date, basal body temperature does not go down, like the ovulation period 36.7 ~ 37.2 mild fever will continue until 13-14 weeks of pregnan

Fetal growth Life begins when the egg and sperm combine to form a cell called the fertilized egg. Examine the entire process from fertilized egg to fetus. Fetus at 26-day-old At the end of the first month of pregnancy, the fetus has a rounded head, arched back, and a long tailed vertebrate. The fertilized egg, which was a single cell, split into hundreds of cells in just four weeks, and developed into organized cells with major human strains such as nerves, muscles, blood vessels, and skeleton. At this time, the heart, brain, spinal cord, and sensory organs begin to form and function to some extent. It is still embryonic and small, C-shaped. Fetus at 6 weeks Beginning at 4 weeks, there are visible small spots on the face, and at 6 weeks, the first eyelid is formed, taking the initial form of the retina. You can start the heartbeat and hear the beats by ultrasound, but the two vessels are tubular because they don't have heart shape yet. When the head grows to become second c