Hello I'm 24 years old I come from a Irish and German background. My family has no abnormal chromosomes that would result in a baby being born with a small chin. I'm not sure about the father of the baby, he is absent from the picture. He did have a big nose and small chin but appeared to be normal, he might have been carrying the defected chromosomes though. I'm 5 months pregnant with a boy. I just found out that my baby might have a chromosome defect because he appears to have a smaller than normal chin. Please give me some advice on what it could be and what I should do. The internet hosts many scary and inaccurate information about these types of situations. Thank you. ~AAAA