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Q: Can a pregnancy conception date be off by 30 days?
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How do you calculate date of conception using due date?

The doctor or ultrasound technician can usually narrow date of conception down to a week by development of the fetus, so if they narrow it down that far for you all you have to do is figure out what day that week you got caught!!! Hope this helps, Good Luck and God Bless!!


Due date is October 3. when did you fall pregnant?

First off, go to a nurse and get checked up, they should be able to tell you the approximate conception date. I am currently 8 months pregnant, my due date is Sept 11th and according to the "pregnancy wheel" I received at a clinic, my approximate conception date was December 19th. http://www.obfocus.com/calculators/duedate.htm Has a wonderful online verson! For a due date of October 3rd, the approximate conception date is January 12th. Hope that helps you! Congratulations!


Would excessive drinking the first trimester alter the measurements of ultrasound to determine size and conception date And if so how many days off could it be?

NO ultrasounds measure amniotic fluid and the fetus head, this would not alter you're conception date. If you wanna know you're conception date go to www.webmd.com and they will calculate the time you conceived based on you're due date. It's just an estimate. GOd bless


When did you conceive if due date the 23 sept 2011?

That would make your estimated conception date December 30th 2010. This date might be off by a couple of days though. It also depends on the length of your menstrual cycles too.


What day did I conceive if your baby is due aug 15 2010?

The approximate date of conception was after October 8th 2009. The actual day in October depends on what day in July is the due date.


Can a dating scan for pregnancy be as much as a week off when done before 10 weeks?

Yes it can be sometimes when your around 6-7 weeks into your pregnancy. At 10 weeks, based on the size of the foetus and conception date a pretty accurate date can be arrived at. Yes it can if you have a long cycle. My date from my period was 23rd September but I had a 36 day cycle and my scan date was 4th October.


When did you get pregnant if your due date is oct 1 2011?

That would make your conception date roughly January 7th 2011. However, this date could be off by a few days. It depends on the average length of your menstrual cycles too though.


Two months or so off the pill and you are pregnant and you had two periods that were 10 days apart how do you figure the due date which lmp do you use?

You get an ultrasound and have them date the pregnancy that way.


When was my baby conceived if on July 21st I was 11 weeks and 1 day according to my ultrasound?

Conception date is based on your last ovulation cycle prior to when you didn't get your period. But this can be incorrect if you didn't conceive when you was ovulating. Alternatively you can have a ultrasound scan which will give you a conception date but this can be off by 5 days.


The doctor says you are 7 weeks pregnant could they be off by a couple of days or weeks?

The best way to check the date is count 12 to 14 days from the first day of your last period. Conception usually happens then.


How long do take for her to know she pregnant?

hCG) is produced during pregnancy. It is made by cells that form the placenta, which nourishes the egg after it has been fertilized and becomes attached to the uterine wall. Levels can first be detected by a blood test about 11 days after conception and about 12 - 14 days after conception by a urine test. In general the hCG levels will double every 72 hours. The level will reach its peak in the first 8 - 11 weeks of pregnancy and then will decline and level off for the remainder of the pregnancy.


How long does it take to know when a girl is pregnant?

hCG) is produced during pregnancy. It is made by cells that form the placenta, which nourishes the egg after it has been fertilized and becomes attached to the uterine wall. Levels can first be detected by a blood test about 11 days after conception and about 12 - 14 days after conception by a urine test. In general the hCG levels will double every 72 hours. The level will reach its peak in the first 8 - 11 weeks of pregnancy and then will decline and level off for the remainder of the pregnancy.