Am I too early for a nuchal scan?

[mustbemadno3]

Can anyone clarify how many weeks I am!
The 1st day of my last period was 3rd August and my due date is 9th May.
I have been told to book this scan between 11-14 weeks. I have got in for 19th October but I am worried this maybe too early? I dont want to get it wrong, but Im anxious to get it over with!

its exactly 11 weeks from 3rd aug to 19th october so providing you ovulated on day 14 (or earlier) (ie 17th aug) then its ok. However if you ovulated later than this (were your cycles a regular 28 days?) then it might be too early. i was worried about this as mine was booked in for 11 weeks since my period but i have slightly longer cycles so i pushed it back a week just in case.

MumNWlondon. Thanks for reply. I am pretty much 28 days. Is it possible to conceive before 17th, as I was on holiday with my dh when I thught I could be pgnt. I was really sick around 11th august and after, but my dr said that was too early? Maybe it was the sun!!!
what do you think?