But scans can also lift the lid on a few worries you might be having. If you are having a screening test for Down’s syndrome, you will be offered a dating scan first, as having an accurate due date makes the test more reliable.
If the blood test is taken too early because your dates are wrong, this might lead to you being given a high risk factor when, in fact, your baby is developing normally. The length of your pregnancy is calculated from the first day of your last menstrual period (LMP), even though you don't actually conceive until 14 days after your LMP, and later than this if your cycle is longer than 28 days.
I wasn't totally sure when I got pregnant but I know an feel the date is sooner. I'm not sure to go to the hospital and check things out.
The senior member of staff walked in, didn't ask us any questions, how far along we were, any kind of past history, or anything like this, didn't even look at the notes, put the scanner on and kind of after scanning around for a bit, took the scanner off and started saying, 'Well, why have you come this early?
' And, as I say, 'Well, because you sent us a, the date through to come, you know.
We're meant to be, you know, you're meant to, dating scan between 10 and 12 weeks. And our midwife spoke to someone in the ultrasonography department, and they said that they wanted us, because of our past history, because we had an anencephaly baby, you wanted to scan us at 10 weeks just to, so that it gave you more time to prepare to then do another scan at 16 weeks, which is the original plan'. ' I said, 'All I want you to do is to tell me if my baby is healthy and normal'.