Stressed and Worried..

For some reason I can't get the thoughts of my baby having a facial defect. such as a cleft lip or palate. I'm just wondering does anyone feel similar or has anybody's bundle of joy had a facial defect or defect and how they coped with the situation.and how soon can one be detected? obviously I wouldn't love the child any less but I dream about it regularly and just wanted some advice. thank you x