Scan and worrying!

So in March I found out my baby had anencaphly I was 11 + 4 weeks. I am now 12 weeks, my scan is on Monday with a consultant and I am so nervous. The only reason I found earlier than my 12 weeks scan last time was because I had a minor car accident and they spotted it on that scan. 1 week before my 12 week scan was due. Last time I was in a&e a lot with pain and I had one bit of sporting but I've not had any of this, with this pregnancy. I just feel so worried. Has anyone else been through anything similar that can share their story? 😊