![]() ![]() ![]() While clinical blood tests are more accurate, and can detect exact amounts of the hormone hCG (which is only present during pregnancy) earlier and in smaller quantities, they take more time to evaluate and are more expensive than home pregnancy urine tests. ![]() Pregnancy tests involve the detection of hormones that serve as biomarkers for pregnancy and include clinical blood or urine tests that can detect pregnancy from six to eight days after fertilization. Pregnancy can be detected either by using pregnancy tests or by the woman herself noticing a number of symptoms, including a missed menstrual period, increased basal body temperature, fatigue, nausea, and increased frequency of urination. 2 As such, while it is possible to be fairly confident that a person's child will be born within about two weeks of the due date, it is currently not possible to predict the exact day of birth with certainty. Studies have shown that fewer than 4% of births occur on the exact due date, 60% occur within a week of the due date, and almost 90% occur within two weeks of the due date. 1 However, there are still more factors affecting natural variation in pregnancy terms that are not well understood. While the due date can be estimated, the actual length of pregnancy depends on various factors, including age, length of previous pregnancies, and weight of the mother at birth. Alternatively, the due date can also be estimated based on a person's last menstrual period. During a person's first OB-GYN visit, the doctor will usually provide an estimated date (based on a sonogram) at which the child will be born, or due date. The World Health Organization defines a normal pregnancy term to last between 37 and 42 weeks. Childbirth usually occurs approximately 38 weeks after conception, or about 40 weeks after the last menstrual period. Pregnancy is a term used to describe a woman's state over a time period (~9 months) during which one or more offspring develops inside of a woman. The two additional weeks that bring the total pregnancy term to 40 weeks are the two weeks before conception, which often confuses many people when calculating this information.Related Ovulation Calculator | Conception Calculator The calculator adds 280 days to your first day of last menstrual period to estimate your baby’s is due to come to the world.Ĭonception generally happens two weeks after this date, which would provide you with a 38 week gestation period. From this information, the calculator will calculate and tell you what your EDD is. From this point, your calculator can calculate several other bits of information for you. These give the calculator a starting point to go from. For some calculators, your last menstrual cycle is required. ![]() You should only be providing or entering the date that your last menstrual period started. No personal information is required to come up with your EDD. Almost all online pregnancy due date calculator on the Internet, including ours, are simple to use. They take basic information that you provide, calculate your due date based on the normal gestation period in women and display the details you need. There are various types of due date calculators online, but they all work in a similar way. How the Pregnancy Due Date Calculator Works If you are unsure of your pregnancy status, this pregnancy due date calculator will help you to estimate when your baby will come in case your status is positive.If you have missed your period, and know that you are pregnant, find out when your baby’s likely due date is.In summary, you can use this pregnancy due date calculator if: ![]()
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