38 weeks before Thursday, August 12th, 2010 = Thusday, November 19th, 2009.
Leaving February out, the rest of the year is 48 weeks, but that's not a year - you have to add February back in to call it a "year".
I understand what you are saying when you say messuring, they messure the sac and it calculates what the size is to get the age of the sac/fetus.
It's usually the date of your last period minus 9 months back, plus a week.
There are 24 hours in every day. However, it depends on where you are on whether clocks may go forward or back (happens once a year both forward and back)
Nine months before May 9 is August 9 of the previous year. This calculation accounts for the fact that May is the fifth month of the year, and counting back nine months takes you to August of the previous year.
No, you count back 38 weeks for the conception date, but don't forget this is just an estimate.
To calculate conception you can go from the first day of your last period and add two weeks eg if your last period was on the first of the month then conception would have taken place at around the 15th . If you do not no the first day of your last period but no how many weeks pregnant you are then count back and minus two weeks eg if you are seventeen weeks on the 2nd of September go back on the calendar 15 weeks this will give you a approximate conception date
count 11 weeks back from April 26 and that will be your date of conception
They count the weeks of pregnancy back to the last date of the first day of your menstrual period, not to date of conception. For example, I am considered to be at 15 weeks. The first day of my last period was 11/25/08 and the date of conception was anywhere between 12/9 and 12/16
quite simple count back 20 weeks
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
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Count back 2 weeks, so 6 weeks and 4 days old. Count back 6 weeks and 4 days old on a calendar and that would be an estimate. Also, check out www.babymed.com, and put in you're due date or you're last LMP and they can tell you an estimate of conception. God Bless
For about the first 10-12 weeks all babies grow at about the same rate so term date can be calculated fairly accurately, you then count back 38 weeks for the date of conception. After 12 weeks babies may not all grow at the same rate so it becomes less accurate.
A full term pregnancy is 40 weeks. so if you count back exactly 40 weeks from June 11, you will find that you concieved on September 4 (Labor Day).
My baby was born on May 20th but she was 7 days late, I conceived on August the 6th, this is a definite conception date as I my partner was away and returned on this date, when i then went for my scan they told me i was 13 weeks and 5 days, when we worked it back out it was definite the 6th August. It would obviously depend wether or not the birth was on time or early/late.
Ultrasound gives an estimate of the age of the foetus. At this stage of the pregnancy, it's quite accurate, but it's still only an estimate, and the date of conception could be a few days, even a week, away from the date 19 weeks and 2 days ago.