First scan (5 weeks) was literaly a round sac with an egg in it....The second (6.5 weeks) was a (how do I put it) a peanut type shape with a heart beat!!!
I didn't get to see very much but was lovely to see that it was really real and not in my imagination!
They get your due date from the size of the fetus.
I was told after my first scan that it was possible that as both me and my doctor thought I was further along than I was, I may not have a viable pregnancy....Anembryonic. So, I did all the checks on the internet about that condition and other ones, just to make sure that I had all the facts and new what was going on. It made me feel so much calmer! But luckily everything was fine. (the first bit I saw though....Was only the sac and my heart missed a beat, then as she kept looking around I thought to myself, don't be silly, you know you're ok!)
have you met with the midwife yet?