Just wondering really- I don't know whether to book one or not just for peace of mind! This is my 3rd pregnancy and haven't had one with the previous ones and all worked out fine. Think I'm more worried this time round as it was a complete surprise and also I want to know if there is 1 or 2 in there. Opinions please- are they worth it?? I feel like I've ages to wait for my scan as I'm not seeing the MW until 8th sept when I'll be nearly 10 weeks x