So many threads on here about people worrying about things - anticipation of scans, that they ate the wrong things, didn't take the right vitamins whatever...
Please all stop worrying! Try to have a calm peaceful pregnancy. You can worry for the next 18 years but it will only make you a wreck!
I have the principle of only worrying if there is a real reason, e.g. justified to worry about bleeding or unfavourable scan results, or family situation that doesn't warrant a pregnancy etc, but otherwise try and keep happy and positive - its better for you and for your baby!