can some 1 tell me how reliable conception dates are from ultrasounds? As my lmp started on 15.01.2007 which gave me a due date of 21 oct 2007. But when i had my ultrasound, they gave me a due date of 10 nov 2007? My periods are not the normal 28 day cycle so does any one have any idea of my conception date and how reliable these are?
any help is greatly appreciated!

As far as it comes, i had the same thing. almost exactly. The hospital I went to told me that I was only 9 wks prego for my dating scan, and that i concieved on feb 16th... but 9 weeks from the date I went was Feb sixth. I KNOW when my baby was concieved because I haven't had sex with anyone but my husband and the last time I saw him at that time was Jan 21. The hospitals are weird and honestly, only baby knows when they are coming. I am now about 26 weeks and 4 days. Anyways good luck with your baby and don't fret about the dates. The hospitals are guessing as much as you are!

thanks for your advice! its confusing isnt it? lol x