Most of the parents elect can not remember and know the exact date of conception in the relationship. However, the obstetrician has given you a way on the most common situation based on menstrual cycle are as follows: -Determine the last period and the first day of your last period.-Use the calendar calculated gestational age circles are sold in the pharmacies to start computer: such first day of last period was 7/8/2014 and the date you use this calendar is on 14/9/2014, you will calculate the fetus was 6 weeks.According to gestational age you computer will project your baby's birth date. If you anticipate on October 9th round baby, the baby will have 40 weeks of pregnancy. If she's not on enough enough, as expected, the boy can only go through 38-39 weeks pregnant. Or simply, you just have to be determined on the last period and 40-plus weeks will place on reserve. The most important thing if you want to achieve high accuracy for this approach is that parents have to remember your last menstrual period.
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