So this is my 4th pregnancy and according to the midwives I could be 10 weeks pregnant but based on the conception date I think I could be closer to 11 and a half weeks. It's been 2 weeks since my booking in appointment and I still haven't received a letter, so I called the hospital to check if they could give me a date, to which I was told that they do the scan at 14 weeks and to wait for a letter to arrive as it's "too early", is this right? I remember with my previous pregnancies I had the scans at around 12 weeks (same hospital). I'm worried that if they book me for 14 weeks and turns out I'm more pregnant than previously thought they might not be able to do the down syndrome test. Is this right? Thanks for your replies, I'm just very anxious to see if baby's okay