![]() ![]() It is also possible to get a clinical urine test, but these are not necessarily more accurate than a home pregnancy test, and can potentially be more costly. 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. You and your provider share the same goal: a healthy baby and mom.Related Ovulation Calculator | Conception Calculator They will discuss with you the options for induction.įeel free to ask your provider at what point he or she may consider induction and what the advantages and disadvantages might be. One to two weeks after a missed due date is generally the time when providers become concerned, provided there haven’t been complications with previous pregnancies. ![]() Some of the reasons for induction include low amniotic fluid surrounding the baby, medical conditions that may put you or your baby at risk, or other possible complications. In some cases, if your health or the baby’s health warrants it and you are past your due date, your provider may decide to induce labor. Most of the time, providers prefer to let nature take its course and your baby will be born when he or she is ready. Often, your provider will order an ultrasound in your first trimester to help establish your due date.įirst time mothers can go past their due date to 41 or 42 weeks. However, many factors can influence a woman’s estimate of that date. A due date is calculated as 40 weeks from the first day of your last menstrual period. Only 5 percent of women deliver on their estimated due dates. Some women choose to announce their pregnancy around 12 weeks, after their first OB visit at 7 weeks. This is an important thing to consider when announcing your exciting news about the pregnancy. Around 80 percent of these occur in the first 12 weeks. Studies show that about 8 to 20 percent of women who know they are pregnant have a miscarriage, some time before 20 weeks of pregnancy. One important issue in the first trimester is the concern for miscarriage. If you are unsure of when your last period was or your cycles are irregular, you should contact your provider early to see if an ultrasound is needed to calculate your due date. This is an important date for your provider to know to have an accurate due date. Remember your due date is calculated from the first day of your last period. Due dates are exactly that – an estimate. More precisely, the medical world often refers to it as EDD, the estimated date of delivery. As soon as you announce you are pregnant, you’re likely to hear, “When is your due date?” The truth is, you are very unlikely to have your baby on your due date.
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