Thanks for your help everyone. I am going to have the scan done as as you said Kate - even though I am relatively young, there is still a risk and I would rather know about it.

Bub2Be - I called the centre last week and gave them the date of my last period and then they booked it in according to that. it works out that I will be 11wks 3days. She said anytime between 11 and 13weeks you get the scan done. I cant wait to see what it looks like and finally get a picture! So exciting. They will also confirm the dates and everything which they prefer to do earlier as it gives them a more accurate date of when it will be due.

Honeychild- I am pretty sure you have to wait till the 18week scan to find out the sex (but i could be wrong)