You would have to calculate backwards 13 weeks on a calendar. Keep in mind that whatever date that is would only not be exact but an approximation. The error factor could be plus or minus four days. Actually you would have to count backwards 11 weeks as pregnancy is counted from the first day of the last period, usually about 2 weeks before ovulation. this may vay depending on the length of your cycle.
count 11 weeks back from April 26 and that will be your date of conception
Around April 20, 2010
If the ultrasound is done in the first weeks of pregnancy it is possible to date the embryo within a few days, an ultra sound done later is not as accurate for dating purposes.
Yes
No. A midwife can also estimate the length of the pregnancy through palpitation of the mothers abdomen. However, the most accurate what to know how far along the pregnancy is, is to know the date of your last menstrual period and assume that conception took place approximately 2 weeks later.
The first day of your last period is where the OB/GYN will calculate your due date from. Like say you get pregnant near November 5th, your due date would be around August 11th the following year. Also the OB will do an ultra sound to determine how far along you are and to help them figure your due date.
Today (13th July 2008), you will be roughly 27 weeks pregnant
If your due date is May 14, 2010 you are 9 weeks pregnant
It depends when the dates from your last period were or when your due date is
No. Gestational age is measured from the woman's last period. Even if she doesn't know when this was, the gestational age is time from conception plus 2 weeks. For example, a 'gaedd 19 weeks' will give you a due date 21 weeks in the future. You are 17(+ 1 day) weeks from conception. 19(+ 1 day) weeks from your notional last period and 21 (- 1 day) weeks until your EDD.
When is your due date?
if u are 20 weeks lmp you got pregnant 18 weeks ago so count back 18 weeks but if u want a date u need to give due date or lmp