If you do know the conception date, this is counted as day 14, not day one. You'll be given a report of the scan which will tell you exactly how many weeks It may show a very minor problem, or something that may get better on its own.
How long did you wait for booking in / dating scan? - Pregnancy
We recommend that you present your dating scan results to your usual contact your chosen clinic when booking to check how many we can accommodate. a booking scan) will tell you how many weeks pregnant you are and if you are What if my scan shows something is wrong or I need help after my appointment?
9 Jan 2009 I'm a nurse, and I can tell you absolutely that the first ultrasound (6-10 listen to anything the doctor says anyways, so he/she will come when ready . when she wanted to but it was only 3days after the ealiest scan due date.
13 Jan 2010 I think it's normally quite difficult to 'date' you from an early scan? the dates you have worked out (you know your body better than anyone else!) on their due date, and your 20 week scan will probably give you a clearer idea of . take this with a pinch of salt until week 12 scan (or something to that effect!)