Exactly one hundred percent accurate, “in beans”, it is difficult to calculate
How exactly will I calculate the due date? Exactly one hundred percent accurate, “in beans”, it is difficult to calculate. But there are three ways.
1. It is safest if you know the time of ovulation. Then nine months are added to the known date of ovulation and seven days are deducted.
Example: If proven ovulation or isolated sexual intercourse was on October 20, 2007, the term is July 13, 2008.
2. The calculation based on the first day of the last menstrual period is quite accurate. Nine months and seven more days are added to that date.
Example: If the last menstruation started on October 6, 2007, the deadline is July 13, 2008.
3. The least accurate calculation is based on the child’s first sense of movement. Four and a half months are added to pregnant women who feel the movement of their children for the first time, and five months are added to pregnant women who already have experience with moving children.
Example: If a pregnant woman noticed the first sensation of moving a child on March 15, 2008, the term for the first-born is around July 30, 2008, and for the second and the multi-born around August 15, 2008.