In general, if you think you’re pregnant, you should seek out care, if possible. What steps can you take to get the most accurate due date?
#Conceived date to due date plus#
For example, a crown-rump length measurement, which measures the length of the fetus early in pregnancy, is accurate to within plus or minus five days of the due date, if it’s taken before eight weeks and six days into the pregnancy. If you seek out prenatal care early in your pregnancy, the doctor can perform ultrasounds to more accurately determine the due date. Regularity isn’t that common, so there’s a fair chance that the calculation will be off, but the last menstrual period measurement is still used because it’s considered fairly reliable most of the time. A normal cycle can be between 21 to 35 days, and some people can even have cycles that range outside of that. The caveat is that menstrual cycles are seldom that regular. This sort of calculation can even be done at home using online calculators, such as. The due date is calculated by counting 280 days (40 weeks) from the first day of the last menstrual period. The calculation is based off of the idea of you having a regular 28-day cycle and that ovulation happens 14 days after your last menstruation.
However, there is some imprecision involved with how due dates are measured.Ī due date is often a prediction based on your last menstrual period. With so much being based on the expected due date, it’s important for it to be as accurate as possible. It allows you to plan ahead for when your baby will arrive and helps the doctor know when certain prenatal tests should be performed to make sure the fetus is developing healthily. A pregnant person’s due date is important for many reasons.
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