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). However, conception doesnt actually occur until around 14 days after your LMP, or later if your cycle is longer than 28 days.
Is it bad to have an early scan?
Early reassurance scans are a fantastic way to confirm your gestation period and get a rough estimate of your babys due date. Providing that you are at least six weeks into the pregnancy, the sonographer will be able to take measurements of the baby, from the crown to the rump.
When is best to get an early scan?
We recommend having your early scan at 7 weeks because youll be able to see your baby on the screen. Well also be able to perform more health checks at this stage because we can check the heart. The earliest scan thats going to look something like a baby would be at around 9 weeks.