Congratulations on your pregnancy dating scans are pretty accurate - so you will learn from that how far you are the scan at 12 weeks is to check over your babies development so far, and to confirm the number of babies in your tummy. A dating scan is an ultrasound examination which is performed in order to establish the gestational age of the pregnancy dating scans also reveal other important information such as: the number of fetuses and gestation sacs.
I did a pregnancy test on 13oct and it said i was 2-3 weeks i had my first scan yesterday and it came up as 9 weeks 4 daysthis is only a few days after my period so i couldn't have ovulated yet i know i had sex on 14,15,19,25,29 sept then again 4th oct. Ultrasound dating over the past 40 years, there has been a myriad of research studies exploring the safety, techniques, and benefits of ultrasound use in pregnancy  a comprehensive review of.
Is a dating scan accurate the scan's main purpose is to work out accurately how many weeks pregnant you are and estimate your due date you may have calculated the length of your pregnancy from the first day of your last menstrual period (lmp.
Everything ties in with my dates (first day of last period, date of ovulation test, date of getting jiggy () to coincide with positive ovulation test, pregnancy test, and even a few spots of what i think were implantation bleeding. A dating scan is the best way to predict your due date (phe 2014) the point of the scan is to work out how many weeks pregnant you are you may have calculated the length of your pregnancy from the first day of your last menstrual period (lmp.
Best answer: a scan at around 12 weeks is a very accurate way to calculate when a baby is due, but can be about 1 week plus or minus of lmp dates ovulation occurs 12 to 16 days before the menstrual period begins conception could happen 3 to 6 days after ovulation so dates can be a little off.
Of all of these uses, dating the pregnancy is the most common reason to use ultrasound, particularly when the expectant mother cannot remember the date of her last period (as in breast-feeding or.