Baby measuring behind

Emma

Hey guys,

We had our anatomy scan done and I was 19+2 at the time and she said everything looks good ( as much as they could tell me) heartbeat is 154 but she said I’m measuring at 18 and a half weeks instead so we couldn’t do the full scan as it’s still to small to do the heart vessels? is this something I should worry about? Is this normal at this stage for it to be behind?

Kind of starting to worry cause I have no idea as it’s my first pregnancy!