Calculate due date dating scan
If the heartbeat cannot be detected then more tests have to be done, but this does not necessarily indicate a problem: the baby’s position and other factors can obscure the results of an ultrasound.
An experienced sonographer can often find any major irregularities like limb deformities.
While many women will have a good idea of when they had their last menstrual period, another portion will be far less certain.
This can be due to a number of factors, including whether the pregnancy was planned or not, and if the mother often has irregular periods.
I knew the date I had conceived so I knew my own dates were right xx It may change at your 12 week scan. I wouldnt worry the baby will come when it wants to regardless of due date. X Hi, I'm no expert but I had an early scan today too and my dates say I'm 7 5 but the scan said 6 5 so I think mine is about a week out too.
The sonographer said to me that they're not always accurate until you get the proper dating scan at 12 wks Me and mw worked out my due date from my period which is normally regular I do have polycystic ovaries though so there is a chance I ovulated late, however my condition hasn't affected me before.
These help to ensure the pregnancy goes smoothly, and to identify any problems ahead of time.
The dating scan is generally the first ultrasound that every mother-to-be will have.
The sonographer (the qualified professional who performs the scan) looks for key measurements to find out your baby’s age.
To find your due date, use the drop down menus below to enter the date of the first day of your last period, and click 'calculate date' - the calculator will do the rest.